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they were able to separate into layers of individuals,
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they were able to separate into layers of individuals, 但还是能够分离成数层个体层

Endangered, they number fewer than 2,000 individuals.
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Endangered, they number fewer than 2,000 individuals. 这种生物濒临灭绝 数量不足2000只

and contains several billion individuals.
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and contains several billion individuals. 共有数十亿只蝗虫

a staggering variety of species and countless individuals are striving for space and food.
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a staggering variety of species and countless individuals are striving for space and food. 都有生命为了空间与食物斗争不已 种类繁多 数不胜数

which might help individuals to avoid a fight.
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which might help individuals to avoid a fight. 或许可以避免个体之间的争斗

There are more than 7,000 individuals on Fernandina alone.
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There are more than 7,000 individuals on Fernandina alone. 仅在费尔南迪纳岛上 就有超过七千只海鬣蜥

Individuals link together to form chains which can stretch for fifteen meters.
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Individuals link together to form chains which can stretch for fifteen meters. 这些一个个单体组成的链条可长达15米

but so far only eight individuals here have mastered this daring technique.
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but so far only eight individuals here have mastered this daring technique. 不远处有8只海豚在展示这种高超的技术

fewer more successful than the ants. There can be 8 million individuals in a single hectare.
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fewer more successful than the ants. There can be 8 million individuals in a single hectare. 蚂蚁是雨林昆虫中的佼佼者 每公顷可达800万只

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