如果我们以一分钟前的例子为例，鸟要是害怕它的伴侣，它就是相互矛盾的。

If we take our example from a minute ago, if the bird is afraid of its mate, it's conflicted.

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不久前，他发现蓝知更鸟在枯树上筑巢，而这些枯树往往会被人们砍去，于是他开始为这些鸟制作蓝知更鸟箱，以拯救它们。

Not long ago, he found that the bluebirds were nesting in the dead trees which were often cut down, so he began to make bluebird boxes for the birds in order to save them.

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但在让鸟重新找寻储备的食物前几分钟，研究人员们又用这些鸟已经储备的第二种食物将这些鸟喂得饱胀。

But minutes before allowing the birds to recover their stash, the researchers fed the birds to satiety with that second food-the one they had already stored.

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