rat tail;

用法学习: 1. A rat tail 小辫子, 小辫辫 is a polarizing haircut featuring a long, thin strand of hair growing downward from the back of the head, leaving the rest of the hair short or styled into a fade. Originally popular in the 1980s punk subculture, the tail is frequently braided or dyed and has recently seen a trendy, rebellious comeback among Gen Z. 2. An algal [ˈæl.ɡəl] bloom 水藻丛生 or algae [ˈæl.ɡiː] bloom(algal [ˈæl.ɡəl] adj (algae noun.) relating to algae (= very simple plants that grow in or near water and do not have ordinary leaves or roots): Sewage nutrients do increase algal growth in the harbour. algal bloom Large algal blooms began appearing with increasing regularity in the shallow, coastal sea at the mouth of the Mississippi. green alga plural green algae one of very many kinds of algae (= very simple plants without ordinary leaves or roots that grow in or near water) that grow mostly in fresh water, but also including some kinds of seaweed (= sea plants): Patches of green algae floated on the water. Green algae in a pool can attract mosquitoes. ) is a rapid increase or accumulation in the population of algae in fresh water or marine water systems. It may be a benign or harmful algal bloom. Algal bloom is often recognized by the discoloration in the water from the algae's pigments. The term algae encompasses many types of aquatic photosynthetic organisms, both macroscopic multicellular organisms like seaweed and microscopic unicellular organisms like cyanobacteria. Algal bloom commonly refers to the rapid growth of microscopic unicellular algae, not macroscopic algae. An example of a macroscopic algal bloom is a kelp forest 海藻林, 海带林( kelp is a specific subgroup within the much broader algae family.). Algal blooms are the result of a nutrient, like nitrogen or phosphorus from various sources (for example fertilizer runoff or other forms of nutrient pollution), entering the aquatic system and causing excessive growth of algae. An algal bloom affects the whole ecosystem. An algal bloom is a rapid, dense accumulation of microscopic, plant-like organisms (algae or cyanobacteria) in water systems. They are triggered by warm temperatures, stagnant water, and an excess of nutrients like phosphorus and nitrogen. They can make water look foamy, soupy, or abnormally colored. Depending on the algae, the water may turn green, blue-green, red, or brown. 3. hang-up call A type of nuisance call where the caller repeatedly dials another number and abruptly hangs up when the receiver picks up. hang-up: I. a source of mental or emotional difficulty. a source of annoying difficulty or burden; impediment; snag. The most serious hang-up the project has is a shortage of funds. She has a lot of hang-ups about money. II. 心结. a preoccupation, fixation, or psychological block; complex. His hang-up is trying to outdo his brother. III. a fixture, object, or decoration that can be affixed to a wall, ceiling, other objects, etc.. He brightened up the room with flower baskets and other hang-ups. hang up I. (tr) to put on a hook, hanger, etc. please hang up your coat. II. to replace (a telephone receiver) on its cradle at the end of a conversation, often breaking a conversation off abruptly. III. informal to cause to have an emotional or psychological preoccupation or problem. He's really hung up on his mother. civil 友善的, 和善的, 民事非刑事的, 民事非军事的, 世俗非宗教的 I. You use civil to describe events that happen within a country and that involve the different groups of people in it. ...civil unrest. II. 民事非军事的. You use civil to describe people or things in a country that are not connected with its armed forces. ...the U.S. civil aviation industry. III. 世俗的, 非宗教的. You use civil to describe things that are connected with the state rather than with a religion. not military or religious, but relating to the ordinary people of a country: Helicopters are mainly used for military rather than civil use. civil unrest. civil society. civil disorder. civil government. After ten years of military dictatorship, the country now has a civil government. civil ceremony. We weren't married in church, but we had a civil ceremony in a registry office. They were married on August 9 in a civil ceremony in Venice. ...Jewish civil and religious law. IV. You use civil to describe the rights that people have within a society. ...a United Nations covenant on civil and political rights. V. Someone who is civil is polite in a formal way, but not particularly friendly. polite and formal. being polite, courteous, and respectful in a formal way, without necessarily being warm or friendly. It is often used to describe maintaining basic, acceptable manners—even when you are in a tense situation or dealing with someone you dislike His manner was civil, though not particularly friendly. As visitors, the least we can do is be civil to the people in their own land. The man nodded civilly to Sharpe, then consulted a notebook. ...civility to underlings. VI. 民事的. 非刑事的. relating to private arguments between people or organizations rather than criminal matters: civil court. The matter would be better dealt with in the civil court rather than by an expensive criminal proceeding. civil suit. civil case. civil law. civil action. keep a civil tongue in your head used to tell someone to stop being rude. not have a civil word to say about someone 没有一句好话, 想不起一点好来(not have a bad word to say about/against somebody if no one has a bad word to say about a particular person, everyone likes and respects that person.) to not be able to think of anything good to say about someone. note: civil 和善的, 和气的 implies merely a refraining from rudeness [keep a civil tongue in your head]; polite suggests a more positive observance of etiquette in social behavior [it is not polite to interrupt]; courteous 彬彬有礼的 suggests a still more positive and sincere consideration of others that springs from an inherent thoughtfulness [always courteous to strangers]; chivalrous [ˈʃɪvlrəs] 骑士般的 implies disinterested devotion to the cause of the weak, esp. to helping women [quite chivalrous in her defense]; gallant [ˈɡæl.ənt] 绅士的 suggests a dashing display of courtesy, esp. to women [her gallant lover]. respectful, deferential, gracious, complaisant, suave, affable, urbane, courtly. civil, affable, courteous, polite(反义词: boorish, churlish.) all imply avoidance of rudeness toward others. civil suggests a minimum of observance of social requirements. affable suggests ease of approach and friendliness. courteous implies positive, dignified, sincere, and thoughtful consideration for others. polite implies habitual courtesy, arising from a consciousness of one's training and the demands of good manners.