The apparent vulnerability of tigers and polar bears to reductions in the availability of prey may be linked to the energetic costs of being a large carnivore.
老虎或是北极熊的数量与捕食对象息息相关的这种脆弱性来自于维系大型肉食动物所需的能量。
The apparent vulnerability of tigers and polar bears to reductions in the availability of prey may be linked to the energetic costs of being a large carnivore.
老虎或是北极熊的数量与捕食对象息息相关的这种脆弱性来自于维系大型肉食动物所需的能量。
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