老鼠笼子

1
当老鼠吃饱后，它们会呆在笼子，认为那是“安全”的地方。
When the mice were well-fed, they stayed in areas of the cage that were considered "safe".
2
但当老鼠吃饱后，它们会呆在笼子里被认为“安全”的地方。
But when the mice were well-fed, they stayed in areas of the cage that were considered "safe".
3
在第二个实验中，老鼠要用饥饿来对抗恐惧。饥饿的老鼠被放在一个笼子里，笼子里有一些散发“狐狸气味”的区域和其他气味闻起来更安全的地方。
In the second experiment meant to pit the mice's hunger against their fear, hungry mice were placed in a cage that had certain "fox-scented" areas and other places that smelled safer.

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