中国科学家成功克隆了两只猴子。

Chinese scientists have successfully cloned two monkeys.

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两只猴子在荡秋千。

Two monkeys are swinging.

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然而，当两只猴子被放置在不同但相邻的房间里，以便让它们观察到对方用石头换来了什么时，它们的行为就变得明显不同了。

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 behavior became markedly different.

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