为孩子做家务付钱是最流行的话题之一，尤其是在这个大家都对钱都更谨慎的时代。

Paying kids for housework is one of the most popular topics, especially at a time when everyone is more careful about money.

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这一冒险事业经常成为流行的话题。

Such adventures are often popular topics of discussion.

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这是一个很流行的话题。

This is a very popular topic.

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They are people that you--the community--trusts, that people are willing to let into their home and discuss things like death; that was an innovation that came in then.

他们在社区中享有威望,人们希望他们进入自己家中,并愿意与之讨论一些不快的话题,如死亡,这个创新从那以后就流行了起来

耶鲁公开课 - 金融市场课程节选

And so these are the things people care about a lot and they're the ones that popular diet books are built around almost exclusively: that you should eat low fat, you should eat low carbs, high fat, they're all kinds of permutations of these that exist out there.

所以大量营养素是人们所关注的,它们也是,现在流行的饮食书籍所围绕的话题,类似人们应该吃的低脂或者应该低碳高脂,各种各样的说法都有

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选