1、Such behaviour is regarded as “all too human”, with the underlying assumption that other animals would not be capable of this finely developed sense of grievance.
这样的行为被认为太像人了，在下面的假设下别的动物可以被认为是冤枉的很好的发展
2、However, when two monkeys were placed in separate but adjoining chambers, so that each could observe what the other was getting in return for its rock, their behaviour became markedly different.
但是，当两只猴子被放在各自独立但是连着的物屋子时，这样他们就可以观察另一只通过它的翻滚得到了什么，它们的行动会变得完全不同。
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