Once you start eating in a healthier way, weight control will become much easier.

一旦你开始以一种更健康的方式进食，体重控制就会变得更加容易。

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Archivist Constance Potter says genealogy can be addictive: once you start, it is hard to stop.

VOA: special.2010.06.28

But once you start publishing things in between covers, you actually have to decide what goes in and what goes out.

但一旦你开始把书籍加上封面出版，你就必须决定要出版哪些书。

耶鲁公开课 - 新约课程节选

In other words, once you start thinking about the evanescence of dominance, you're also thinking about literary history.

也就是说，每一种文学支配地位的消失，形成了文学史。

耶鲁公开课 - 文学理论导论课程节选

Once you start an advertising campaign aimed at teen-agers, you make movies for teen-agers.

NPR: Is Hollywood Wasting Money Selling Movies to Teens?

Once you start to get beyond 10 percent you will have potential problems, especially in summer.

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It's not terribly grating, especially once you start hearing some engine noises, but it is noticeable.

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