(cichlid 的复数) n.棘鳍类热带淡水鱼,丽鱼科鱼
plural of cichlid
n. freshwater fishes of tropical America and Africa and Asia similar to American sunfishes; some are food fishes; many small ones are popular in aquariums

Hundreds of millions of years ago a humble fish swam in the lakes and rivers of the supercontinent Gondwana. Eventually Gondwana broke apart, becoming the continents we know today. And the descendants of that fish, now called cichlids, continue to sw

发表于:2018-12-24 / 阅读(81) / 评论(0) 分类 2017年Scientific American(一)月

AS IT IS 2015-11-02 Can Fish Teach Humans to Regrow Teeth? 人类能学习鱼类的牙齿再生术么? Most people are born with two sets of teeth. They use baby teeth to break down food as children. As they become adults, the baby teeth are replaced

发表于:2019-01-12 / 阅读(63) / 评论(0) 分类 2015年VOA慢速英语(十一)月

Hundreds of millions of years ago a humble fish swam in the lakes and rivers of the supercontinent Gondwana. Eventually Gondwana broke apart, becoming the continents we know today. And the descendants of that fish, now called cichlids, continue to sw

发表于:2019-01-20 / 阅读(90) / 评论(0) 分类 2017年Scientific American(三)月
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al khurtum (khartoum)
Albert Town
ambidextrous
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attentional signal
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auto-destruction
benthic flora
border protection
Brachanthemum gobicum
bromine-quenched counter
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Campani
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chlamydosaurus kingis
Cirsium flodmanii
coccinine
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El Jadida, Wilaya
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Rhodopaxillus sordidus
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Sorbaria kirilowii
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tetrakaidecagon
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zero beat reception