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.

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“狐狸气味”的区域和其他气味闻起来更安全的地方。

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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.

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。

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This hungry fox ended up a victim of the sub-zero temperatures when it chased a duck across an ice-covered lake - and froze to death.

一只饥饿的狐狸在结冰的湖面追赶野鸭，结果冻死在冰点下的水中。 图片由摄影师蒂姆·伍德科克于南安普顿的汉特斯附近的阿什利特水塘处拍得。

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Given that the hen is likely, sooner or later, to meet a hungry fox, there is little point in it having a body which can repair itself perfectly particularly if the resources for that repair come at the expense of egg-laying.

ECONOMIST: Ageing