用法学习: 1. While the new iPhones are selling like hot cakes, Apple users are not being as quick off the mark when it comes to installing the new operating system, iOS8, on their older iPhones. Jedi mind trick 精神控制 The mind trick is something used by Jedi's to persuade people to do things as they wish them to go. This is generally achieved by the Jedi waving his hand slowly in front of his face and speaking slowly and clearly what they would like the person to believe. This is often used in jest for when you are trying to persuade someone of something and it isn't going very well. Guard: Do you have any identification? Jedi: *waving hand* We do not need any identification. Guard: You do not need any identification. 2. Friends 20周年: Rachel to Joshua: "Ok, all right. This is gonna sound a little hasty着急, 仓促, but uh, just go with it. Umm. What if we
got married?" Matthew Perry's Chandler Bing was so "oh my God" desperate
to get away from ex Janice in "The One With
All the Rugby" that he pretended to be moving to Yemen, but it wasn't as
easy of an out as he had planned. Joey and Phoebe made a pact to set
each other up on blind dates in "The One with the Pediatrician." When it
slipped Joey's mind 忘记了, 忽略了 he found a stranger in Central Perk named Mike
Hannigan and he and Lisa Kudrow's Phoebe went on
to marry during the tenth and final season. 3. throw the book at someone 从严惩处, 处罚, 重罚, 严惩, 下重手惩治 Fig. to charge or convict someone with as many crimes as is possible. It was the fifth time Frank had been arrested for drink-driving, so the judge threw the book at him. I made the police officer angry, so he took me to the station and threw the book at me. The judge threatened to throw the book at me if I didn't stop insulting the police officer. user 乘人之危者, 利用别人的人 (pejorative) An exploiter, an abusive user (a person who uses something or someone unfairly, selfishly and/or unethically).
CANBus通讯: 1. Mechatronics 机械电子学 is a design process that includes a combination of mechanical engineering, electrical engineering, telecommunications engineering, control engineering and computer engineering. Mechatronics is a multidisciplinary field of engineering, that is to say, it rejects splitting engineering into separate disciplines.
Originally, mechatronics just included the combination of mechanics and
electronics, hence the word is a combination of mechanics and
electronics; however, as technical systems have become more and more complex the word has been broadened to include more technical areas. 2. CanBUS: CAN data transmission uses a lossless 无损失的, bit-wise, arbitration ( 关于此种arbitration决定优先级的方法详细情况见下边. arbitration [ˌɑ:(r)bɪˈtreɪʃ(ə)n] 调停, 协商
the official process of trying to settle a disagreement between two
people or groups by considering all the facts and opinions. go to arbitration (=use arbitration): Some salary claims will go to arbitration. mediate [ˈmi:dieit] I. [intransitive/transitive] to try to end a disagreement between two people or groups. They mediate territorial disputes领土争端 between neighbouring nations. mediate between: The Bishop mediates between the demonstrators and the authorities. a. [transitive] to find an agreement or solution that settles a disagreement. Iran mediated an agreement between the two African countries last September. II. [transitive] formal to influence or cause a process or event. arbitrary [ˈɑ:(r)bɪtrəri] I. 武断的, 没有特别原因的. not based on any particular plan, or not done for any particular reason. an arbitrary decision. The selection of the 100 participants was completely arbitrary. a. used about actions that are considered to be unfair. This is a country where arbitrary arrests are commonplace. arbitrate [ˈɑ:(r)bɪtreɪt]
to officially try to settle a disagreement by considering all the facts
and opinions. To make a judgment (on a dispute) as an arbitrator or
arbiter. to arbitrate a disputed case. ) method of
contention resolution竞争解决机制(contention
I. The act or an instance of striving in controversy or debate. dispute
in an argument. II. A striving to win in competition; rivalry: The teams met in fierce contention for first place. III. An assertion put forward in argument. a bone of contention 竞争焦点, 争论焦点 something that people argue about for a long time. We've
fought for so long that we've forgotten what the bone of contention is.
The question of a fence between the houses has become quite a bone of
contention. The main bone of contention was deciding who would take care of the children after the divorce. wiki: In computer science, resource contention 资源竞争 is a conflict over access to a shared resource
such as random access memory, disk storage, cache memory, internal
busses or external network devices. In recent years, research on the
contention is more focused on the resources in the memory hierarchy,
e.g., last-level caches, front-side bus, memory socket connection. Resolving 解决 resource contention problems is one of the basic functions of operating systems. Various low-level mechanisms can be used to aid this, including locks, semaphores, mutexes and queues. The other techniques that can be applied by the operating systems include intelligent scheduling, application mapping decision, and page colouring.
Failure to properly resolve resource contention problems may result in a
number of problems, including deadlock, livelock, and thrashing. thrashing内存页码频繁切换, 内存数据和硬盘数据频繁交换: In computer science, thrashing occurs when a computer's virtual memory subsystem is in a constant state of paging, rapidly exchanging data in memory for data on disk,
to the exclusion of most application-level processing. This causes the
performance of the computer to degrade or collapse. The situation may continue indefinitely until the underlying cause is addressed.). This arbitration method requires all nodes on the
CAN network to be synchronized to sample every bit on the CAN network
at the same time. This is why some call CAN synchronous. Unfortunately
the term synchronous is imprecise不准确的 since the data is transmitted without a
clock signal in an asynchronous format. During a recessive state the signal lines and resistor(s) remain in a
high impedances state高阻抗状态 with respect to both rails. Voltages on both CAN+
and CAN- tend (weakly) towards ½ rail voltage. A recessive state is only
present on the bus when none of the transmitters on the bus is
asserting a dominant state. During a dominant state the signal lines and resistor(s) move to a low
impedance state with respect to the rails so that current flows through
the resistor. CAN+ voltage tends to +5 V and CAN- tends to 0 V. Irrespective of signal state the signals lines are always in low
impedance state with respect to one another by virtue of the terminating
resistors at the end of the bus. This signalling strategy differs significantly from 迥异于 other balanced line transmission technologies such as RS-422/3, RS-485,
etc. which employ differential line drivers/ receivers and use a
signalling system based on the differential mode voltage of the balanced
line crossing a notional 0 V. Multiple access on such systems normally
relies on the media supporting three states (active high, active low and
inactive tri-state) and is dealt with in the time domain. Multiple
access on CAN bus is achieved by the electrical logic of the system
supporting just two states that are conceptually analogous to a 'wired
OR' network. 3. So, if a recessive bit is being transmitted while a dominant bit is
sent, the dominant bit is displayed, evidence of a collision冲突. (All other
collisions are invisible.) A dominant bit is asserted by creating a
voltage across the wires while a recessive bit is simply not asserted on
the bus. If any node sets a voltage difference, all nodes will see it.
Thus there is no delay to the higher priority messages, and the node
transmitting the lower priority message automatically attempts to
re-transmit six bit clocks after the end of the dominant message. This
makes CAN very suitable as a real time prioritized 有优先级的 communications
system. 4. recessive [rɪˈsesɪv] a recessive gene 隐性基因 is one that needs to be present in both parents in order to produce a particular feature or quality in a child. a dominant gene显性基因 causes someone to be born with particular genetic features, even if it is only present in one parent. dominant more important, powerful, or successful than the other people or things of the same type. The company cannot preserve its dominant position统治地位 in the market. The issue of climate change was the dominant theme of the conference. a. a dominant person or animal is stronger than others in a group and wants to control them. It is easy to spot the dominant wolf in the pack. a dominant 强势的 personality. b. more noticeable than the other parts or aspects of something. Red is usually the dominant colour in his paintings. The CAN specifications use the terms "dominant" bits and "recessive" bits where dominant is a logical 0 (actively driven to a voltage by the transmitter) and recessive is a logical 1 (passively returned to a voltage by a resistor). The idle state is represented by
the recessive level (Logical 1). If one node transmits a dominant bit
and another node transmits a recessive bit then the dominant bit "wins"
(a logical AND between the two). recess
n. I. [countable/uncountable] 休会. a short time between periods of work
in an official organization, especially a court or parliament. Parliament returns from its summer recess next week. a. American
a period between school lessons when students can eat, rest, or play.
The British word is break. II. [countable] a space in a room where part
of a wall is further back than the rest of it 2. the recesses of something 最隐秘的部分 I. the parts of something that you cannot see easily because they are hidden or dark. She reached into the darkest recesses of her handbag. II. the parts of your mind or feelings that you keep hidden from other people. 5. During arbitration(优先级的武断决定), each transmitting node monitors the bus state and
compares the received bit with the transmitted bit. If a dominant bit is
received when a recessive bit is transmitted then the node stops
transmitting (i.e., it lost arbitration). Arbitration is performed
during the transmission of the identifier field. Each node starting to
transmit at the same time sends an ID with dominant as binary 0,
starting from the high bit. As soon as their ID is a larger number
(lower priority) they will be sending 1 (recessive) and see 0
(dominant), so they back off. At the end of ID transmission, all nodes
but one have backed off, and the highest priority message gets through
unimpeded. 以ID为15和ID为16的两条消息竞争举例: When this happens, the node with the ID of 16 will realize that it lost
its arbitration, and allow the node with ID of 15 to continue its
transmission. This ensures that the node with the lower bit value will
always win the arbitration. The ID with the smaller number will win the
right to use. Message IDs must be unique on a single CAN bus, otherwise two nodes would continue transmission beyond the end of the arbitration field (ID) causing an error.
新闻: 1. 澳洲恐怖主义者的蜕变: "After her house was raided,
she said they must be mistaken搞错了, her son would never do anything wrong,"
the neighbour told the Australian yesterday. THE central figure in Australia's terror plot is a born-again 重生的, 再生的 zealot with a history of drug use, family violence and mental illness. As a young man, he worked as a tout ( I. be touted as something 吹嘘, 吹捧: She's being touted as a possible challenger for the title. II. [intransitive/transitive] to try to persuade people to buy something by telling them about it, especially loudly and in public. tout for business/trade/custom: street vendors touting for business. III. [transitive] British to sell tickets for an event such as a sports match or concert for more money than their real price. ) at John Ibrahim's Kings Cross brothel Love Machine. Friends told 7.30 he embraced the fast-living, drug-fuelled lifestyle and liked to party hard. "He drank a lot, was a big smoker烟瘾很重, he liked drugs, loved women and could be violent. He was protective of his friends and that could make him very violent." One friend told the ABC that Baryalei had suffered extreme bouts of depression and at one point 曾经一度 spoke of suicide. Around this time, the ABC says, Baryalei had a religious epiphany( epiphany [ɪˈpɪfəni] 觉悟, 梦醒, 警醒. a moment when you suddenly realize or understand something important. ) and in 2012 he started going to a local mosque. The one-time drug user grew a beard and became a born-again preacher, gaining a devout following of young men in his mission to expose the failings of the Western world. In April 2013 he reportedly travelled to the Turkey-Syria border, and soon joined up to Islamic State, where he has become the group's most senior Australian leader, allegedly responsible for recruiting foreign fighters. 2. 警车冲进卧室： A COUPLE were lucky to escape serious injury after a police car crashed into the bedroom of their Western Sydney home this morning. The dog squad vehicle responding to a report of a break and enter at Fairfield Heights came off the road and smashed into the brick house. The car careered ( career I. to move forwards very quickly in an uncontrolled way. career into/along/down etc冲进: The driver lost control and careered into a tree. II. to be in a situation that you cannot control because things are happening so quickly. The economy is in danger of careering out of control. career as: He has just started out on a career as a photographer. academic/political/managerial etc career: Rosen had decided on an academic career. pursue/embark on/follow a career: Only 20 per cent of the students intend to pursue careers as engineers in industry. make a career out of something: to do something regularly, often something wrong or silly, so that you get a reputation for it. My brother seems to be making a career out of upsetting people 职业做...的, 专业...的, 专门.... young graduates looking to make a career out of teaching. end/ruin someone's career: the financial scandal that ruined her career. a chequered career (=sometimes successful and sometimes not): an entrepreneur with a rather chequered career. a distinguished/successful/glittering career: He subsequently enjoyed a distinguished career in the diplomatic service. someone's playing/acting career打球生涯, 表演生涯: the injury that ended his playing career. launch a/your etc career 职业起步: The 25-year-old actress is now launching her career over here. the peak/height of someone's career: In 1999 Mackay was at the peak of her show business career. a good/smart/clever career move an action or change of job that helps you to be successful in your career. Insulting the boss's daughter was not a good career move.) through a metal fence before it hit the corner of the house and knocked down its brick wall where it came to a stop. "My wife's alarm went off at 5.30am and she just sort of twisted to one side 身体扭向一边 to switch it off and we heard the squeal of the tyres," he said. "The first bang was when he went through my front guard rail护栏(railing: a fence made of narrow posts supporting an upper bar. ) then a split second after that there was a big bang into the front of the house into the bedroom. "The bricks came flying down and hit my wife's face and I got thrown from the bed. She is okay except for where the bricks hit the side of her mouth, had she not rolled over she would've had bricks on her head." Paramedics treated Mrs England for cuts near her mouth. The police officer and his dog were not hurt. "I was in deep shock, we're still in deep shock," Mr England said. "At first we heard some shouting and I thought it was another car but then when we looked properly we could see the blue markings蓝色标记 on the side of the truck. Mr England said the house was fully insured and the "totalled" bedroom could be repaired. "I'm always telling people if they don't stop they'll go through my garage and this one didn't and it went into my bedroom so that's about it. We get sirens along here 24/7," he said.
New plans for fighting off an Asian carp 亚洲鲤鱼 Great Lakes invasion: State and federal agencies are at war with the Asian carp, an invasive fish species that can grow up to five feet and weigh more than a hundred pounds. The Great Lakes are under the threat of invasion by a foreign species — and the debate is raging ( raging I. 肆虐的, 肆无忌惮的. Very active and unpredicatable; volatile: a raging debate; a raging fire. II. Remarkable; extraordinary: a raging hit on prime-time TV. fly into a rage Fig. to become enraged suddenly. When he heard the report, he flew into a rage. We were afraid that she would fly into a rage. rage against/over someone or something to vent one's anger about someone or something; to criticize someone or something severely. She exhausted herself raging against Judy. Mary is raging about the office politics again. rage at someone or something to direct one's anger at someone or something. Why are you raging at me? What on earth did I do? Nothing can be solved by raging at the police department. rage out of control to become uncontrollable. The fire raged out of control and threatened the residential area. If we didn't do something quickly, the fire would be raging out of control.) on how it can be prevented. "Once an invasive species is established, it's really, really hard to eradicate清楚," said Roger Germann, executive vice president of Chicago's Shedd Aquarium. With no natural predators天敌(arch adj. I. Chief; principal: their arch foe. II. Mischievous; roguish: an arch glance. sworn enemy誓言不共戴天的仇敌. An archenemy 主要天敌, 主要对手, archfoe, archvillain or arch-nemesis (sometimes spelled arch-enemy, arch-foe, arch-villain or arch-nemesis, arch-rivals.)) and insatiable appetites难以满足的食欲, 大胃口, Asian carp can eradicate entire fish populations by consuming nearly all of the available plankton, which are the primary food source for most fish. Asian carp have slowly worked their way up the Mississippi River over the last 40 years after being brought to the United States from Asia in the 1970s to help get rid of algae on catfish farms([ˈældʒi:] Any of various chiefly aquatic, eukaryotic, photosynthetic organisms, ranging in size from single-celled forms to the giant kelp. Algae were once considered to be plants but are now classified separately because they lack true roots, stems, leaves, and embryos.) and wastewater treatment ponds. In recent years, however, the carp have been found in northern parts of the Illinois River, about 40 miles southwest of Lake Michigan. If Asian carp reach there, researchers say the entire ecosystem of the Great Lakes could be devastated, including the region's $7 billion annual fishing industry. "This is a national treasure国宝 that we have and it's worth keeping," said Grand Rapids (Mich.) Mayor George Heartwell. "It's 20% of the surface fresh water地表淡水 on the globe right here. We're the stewards 保护着 of it ( steward I. a man whose job is to look after the passengers on a plane, train, or ship, especially serving them with food and drink. a. a man whose job is to provide food and drink in a club, college etc. II. someone who looks after something and protects it. the steward of the club's funds. III. someone who helps to organize people at an event such as a football match, a race, or a wedding. IV. someone whose job was to look after a house or land for someone else in the past. ) and it's at risk right now." With the invasive species on the doorstep of 到家门口了 the Great Lakes, officials have tried a wide variety of measures to keep the fish away: water cannons that create turbulence in the river; chemical toxins; hiring commercial fisherman; and even electric fishing电击鱼. "We've taken已经花费 over 2.1 million pounds since 2010," said Kevin Irons of Illinois' Department of Natural Resources. "We've taken as many as 80,000 or 100,000 pounds in a given week." But the Army Corps of Engineers, Heartwell and other mayors in the Great Lakes and St. Lawrence Cities Initiative say those methods — along with a series of underwater electric barriers in the Illinois River — still aren't doing enough to completely protect the Great Lakes from Asian carp. After two years of research, the Army Corps of Engineers earlier this year presented 提出 lawmakers with eight potential plans for protecting the Lakes. The proposal提议 that's received the most attention would physically cut-off Lake Michigan from Chicago's waterways水路 with a series of permanent barriers. Heartwell and others say that $18 billion plan, which is expected to take 25 years to complete, has the best shot at protecting the Lakes. "It's not inexpensive but it's a solution," Heartwell said. "The risk of course of not doing it is that we have a multi-billion dollar sports fishing and tourism industry that would be devastated here in the Great Lakes." Critics批评者 of the plan though say it's too expensive, too slow, and isn't guaranteed to keep Asian carp from reaching the Great Lakes. "The permanent barrier, depending on how simple it is or how massive it is, may not take into account 考虑到 some of the other waterways boats can get in," Germann said. "It may not take into account a hundred-year flood that happens. So, I'm not sure that that's ultimately even at the end of the day, the permanent solution." Chicago's waterways are also key shipping routes for businesses to easily ship goods from the Great Lakes, down the Mississippi River, and into the Gulf of Mexico. Permanent barriers would cost commercial shippers more than $200 million per year, according to the report. There's no specific timeline for Congress to take action and any decision could still be a few years away, meaning Asian carp could still have a few more years to reach the Great Lakes.
