extinction

英 [ɪkˈstɪŋkʃn]

美 [ɪkˈstɪŋkʃn]

n.  (植物、动物、生活方式等的)灭绝，绝种，消亡

复数：extinctions　

CET6TOEFLGREIELTSTEM8化学

BNC.7889 / COCA.6977

牛津词典

noun

• （植物、动物、生活方式等的）灭绝，绝种，消亡
  a situation in which a plant, an animal, a way of life, etc. stops existing
  1. a tribe threatened with extinction/in danger of extinction
     面临消亡威胁 / 有消亡危险的部落
  2. The mountain gorilla is on the verge of extinction .
     居住在山区的大猩猩已濒临灭绝。

柯林斯词典

• N-UNCOUNT （物种的）灭绝
  Theextinctionof a species of animal or plant is the death of all its remaining living members.
  1. An operation is beginning to try to save a species of crocodile from extinction...
     一项努力拯救一个鳄鱼物种、使其免于灭绝的行动已经开始。
  2. Many species have been shot to the verge of extinction.
     很多物种已经被猎杀到灭绝的边缘。
• N-UNCOUNT 消亡;消灭;不复存在
  If someone refers to theextinctionof a way of life or type of activity, they mean that the way of life or activity stops existing.
  1. The loggers say their jobs are faced with extinction because of declining timber sales.
     伐木工人说由于木材销量下降，他们的工作恐不复存在。

英英释义

noun

• the act of extinguishing
  1. the extinction of the lights
  Synonym:extinguishingquenching
• a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
  Synonym:experimental extinction
• complete annihilation
  1. they think a meteor cause the extinction of the dinosaurs
  Synonym:extermination
• the reduction of the intensity of radiation as a consequence of absorption and radiation
• no longer in existence
  1. the extinction of a species
  Synonym:defunctness
• no longer active
  1. the extinction of the volcano

双语例句

• Droplet ignition and extinction in practical combustors are strongly influenced by forced convection and turbulence.
  在实际燃烧室中，液滴点火和熄火受到强迫对流和紊流的强烈影响。
• The extinction of this kind of animals was due to the alternation of habitat.
  这种动物的灭绝是由于他们栖息地的改变。
• Hundreds of tree species face extinction
  许许多多树种濒临灭绝。
• Two endangered species of wading bird face extinction because of the changes.
  由于这些变化，涉水鸟的两个濒危种类面临着灭绝。
• The change in climate might be one of the causes for the extinction of dinosaurs.
  气候的变化也许是恐龙灭绝的一个原因。
• Polar bears, desert gazelles and sharks were all added to the list of species facing extinction.
  北极熊、漠瞪羚和鲨鱼都已经被列入濒临灭绝的物种。
• The extinction ratio changes with the operation current and temperature.
  消光比随注入电流和温度的升高而变化。
• The effects on the extinction ratio of double crystal electro-optic Q-switching were analyzed in this paper.
  分析了影响双块晶体电光调Q消光比的各项因素。
• But some plants and animals DID survive through the period of dinosaur extinction.
  但是一些动植物确实在恐龙灭绝期间幸存下来了。
• 30 percent of reptiles, birds, and fish are currently threatened with extinction.
  目前，30%的爬行动物、鸟类和鱼类面临灭绝的危险。