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We know pain is--of others is aversive for chimpanzees and we know this in certain ways.
我们知道黑猩猩也讨厌其他黑猩猩的痛苦,这是非常确定的。
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We know pain is--of others is aversive for chimpanzees and we know this in certain ways.
我们知道黑猩猩也讨厌其他黑猩猩的痛苦,这是非常确定的。
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