Simple ideas are dangerous because they can change the world, for better or worse.
简单的观点是危险的因为这可以改变世界，变好或者变差。
Talk to your partner. Talk about how your daily lives and relationship may change — for better and for worse — once the baby is born.
和爱人保持沟通 跟你的爱人一起设想，一旦有了孩子，你们的生活及夫妻关系将会发生怎样的变化——正面的和负面的。
The findings, reported in the American Journal of Epidemiology, do not prove that a change in marital status directly causes the change in fitness -- for better or worse.
该研究结果发表于《美国流行病学期刊》(the American Journal of Epidemiology)。 研究未证明婚姻状况的改变会直接导致健康变化——不管是变好，还是变坏。
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