其后果就是CO 2含量下降，温室效应减弱并引发了冰河时代的到来。

As a result CO2 levels fell and the greenhouse effect weakened, triggering an ice age.

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内在对话会引发雪球效应。

These inner dialogues bring about a snowball effect.

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美元在国际贸易中的地位引发这种网络效应。

The dollar's favoured position in international trade owes something to this kind of network effect.

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Here are humans who had to walk long distances potentially to find the food, kill the food at great risk to themselves; inspiring a cascade of physiological effects that have to do with fear and arousal and things like that, not to mention all the calories one would burn doing this kind of activity.

这些人可能需要走很远的路,去寻找食物,冒着巨大危险,杀死猎物,人们耗费能量以激活一系列生理效应,用以战胜恐惧,引发斗志,更不用说人们在狩猎的过程中,消耗的卡路里量了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选