They're what ecologists call a "keystone" species, who control the abundance every other species, but require a habitat of sufficient size to support those other creatures.
它们是生态学家所谓的“重点”物种，控制着大量的其它物种，不过它们需要足够大的栖息地以供养其它那些生物。
They're what ecologists call a "keystone" species, who control the abundance every other species, but require a habitat of sufficient size to support those other creatures.
它们是生态学家所谓的“重点”物种，控制着大量的其它物种，不过它们需要足够大的栖息地以供养其它那些生物。
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