Like the flu, a person's emotional state can be contagious.

就像流感一样，一个人的情绪状态是可以传染的。

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Forgiveness can be contagious.

饶恕是可以被传播的。

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Worse yet, bank runs can be contagious.

更糟糕的是，银行挤兑可以传染。

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Laughter could be viewed as a form of involuntary noisemaking and it's contagious.

我们可以把笑声视为不由自主地发出的声音,然后笑声有感染性。

耶鲁公开课 - 心理学导论课程节选

If you make a point of enjoying yourself, your positive attitude will be contagious.

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Preschool brains haven't yet fully developed the prefrontal system, and young kids' free-spirited thinking can be contagious.

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But recent seasons have taught Arsenal that those setbacks can be contagious this time of year, spreading from one competition into the next.

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