extinction

noun

1. （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。

1. N-UNCOUNT （物种的）灭绝
   The extinction of 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。
2. N-UNCOUNT 消亡;消灭;不复存在
   If someone refers to the extinction of 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。

1. They have driven the rhino to the edge of extinction
   他们已经令犀牛濒临灭绝。
2. 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。
3. 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。
4. 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。
5. 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。
6. Hundreds of tree species face extinction
   许许多多树种濒临灭绝。
7. 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。
8. We shall simply be resigning ourselves to extinction unless we carry on the four modernizations.
   如果不搞四个现代化，我们就只有束手待毙。
9. 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。
10. Many species are in peril of extinction because of our destruction of their natural habitat.
    许多物种由于我们破坏了它们的自然环境，现在正面临灭绝的危险。
11. This species of animal is on the verge of extinction.
    这种动物已几近灭绝。
12. 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。
13. 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。
14. The mass extinction is the greatest environmental threat that human is facing.
    物种大灭绝和不可恢复性是人类面临的最大环境威胁。
15. The theme is animals and birds under threat of extinction in Australia and its territories.
    主题是根据在澳大利亚和领土灭绝威胁的动物和鸟类。
16. 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。
17. 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。
18. Current extinction rate projections may be overestimating the role of habitat loss on species, a study suggest.
    一项研究显示，现有物种灭绝速率预测可能高估了栖息地缺失对物种的影响。
19. Changes in land use may result in loss of habitat and extinction of species.
    在土地使用的变化可能导致生境和物种灭绝的损失。
20. This species was doomed to extinction.
    这一种类注定要灭绝。
21. 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。
22. If this animal extinction, the Chinese culture in terms of inheritance and development of a defect.
    如果这种动物灭绝了，对中国文化的继承和发展来讲是一个缺损。
23. 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。
24. His movie of the extinction of dinosaurs was a great success.
    他的关于恐龙灭绝的电影取得了巨大的成功。
25. 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。
26. 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。
27. 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。
28. I have help getting protection now, because I was near extinction.
    现在我受到了保护，因为我正濒临灭绝。
29. This is the largest extinction known.
    这是最大的绝种已知。
30. This marks precisely to within a few thousand years the point of mass extinction on the land.
    这明确标志着正是在这几千年中，发生了陆地上的大规模灭绝。

noun

1. the act of extinguishing
   1. the extinction of the lights

   Synonym:    extinguishingquenching

2. a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus

   Synonym:    experimental extinction

3. complete annihilation
   1. they think a meteor cause the extinction of the dinosaurs

   Synonym:    extermination

4. the reduction of the intensity of radiation as a consequence of absorption and radiation

5. no longer in existence
   1. the extinction of a species

   Synonym:    defunctness

6. no longer active
   1. the extinction of the volcano