the state or process of a species, family, or larger group being or becoming extinct
(生物的种、科或更大种群的)灭绝,绝种
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the extinction of the great auk 大海鸦的灭绝
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[count noun]
mass extinctions .大量灭绝。
the state or process of ceasing or causing something to cease to exist
消灭,消亡
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the extinction of the state .国家的消亡。
the wiping out of a debt
(债务的)偿清。
【物理】 消光
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ultraviolet extinction .紫外线消光。
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extinctionn.灭绝;绝种;消光;消亡;消灭;偿清
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extractionn.取出;拔出;提取;采掘;家世;祖系;血统
"late Middle English: from Latin