This second chimpanzee is not a relative of the first chimpanzee and they've never seen each other before.

这只黑猩猩跟第一只黑猩猩,没有血缘关系,它们以前也从来没见过面。

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Now, when the first chimpanzee hits the lever the second chimpanzee gets a painful electric shock, putting the first chimpanzee in a horrible dilemma.

当第一只黑猩猩拍杠杆时,第二只黑猩猩就会受到痛苦的电击，这样第一只黑猩猩就进退两难了。

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In these studies, they put a chimpanzee in a room and there's a lever.

在这些实验中，黑猩猩被放到一个房间，房间有根杠杆。

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It's very unlikely any of you would either but they go a long time without food, suggesting they do not want to cause this other chimpanzee pain.

你们也不会,但它们忍了很长时间才吃，这表明它们不想造成另一个黑猩猩受苦。

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And when the chimpanzee slaps the lever, it gets some food.

当黑猩猩拍杠杆的时候，它就能拿到食物。

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And in the other room another chimpanzee is placed.

而在那个房间里有另一只黑猩猩。

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It only works within species. So, in another experiment they put a rabbit in the other room and the chimpanzee would slap the lever repeatedly to make the rabbit scream in pain and jump.

这种结果只出现在同种动物上，在另一个实验里,他们在另一个房间放一只兔子,结果黑猩猩不停地拍杠杆,让兔子痛得上跳下窜，大声尖叫。

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