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• no longer active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

• 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。
• 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。
• This species was doomed to extinction.
  这一种类注定要灭绝。
• In this paper, a technology on generation of ultrashort pulse with high extinction ratio is studied.
  实验研究了一种高消光比短脉冲的产生技术。
• 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。
• This species of animal is on the verge of extinction.
  这种动物已几近灭绝。
• The animals were ruthlessly hunted to the verge of extinction.
  这些动物由于遭到无情的捕猎而濒于灭绝。
• 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 centuries-old ritual seems headed for extinction.
  延续了几个世纪的仪式似乎要面临消亡。
• 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。