From the female perspective there are possible evolutionary consequences too.
从雌性的角度来看，也存在可能的进化结果。
The question has been why, from an evolutionary perspective, they're engaging in this behavior.
我们关注的问题是，如何用进化论观点解释黑猩猩的这种行为的动机。
The question has been why, from an evolutionary perspective, they're engaging in this behavior.
我们关注的问题是，如何用进化论观点解释黑猩猩的这种行为的动机。
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