It is really good to do exercise.

做运动真的很好。

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One drawback is that children become fixated and immersed in their screen time and reluctant to do exercise, resulting in problems such as obesity.

一个缺点是，孩子们会过分沉溺于电脑屏幕中，不愿意运动，从而导致肥胖等问题。

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We are supposed to do exercise once or twice a day to keep healthy.

我们应该每天锻炼一两次以保持健康。

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So exactly how much exercise do you need to do to gain all of these great health effects?

VOA: special.2010.06.08

or actually ask the TFs in section to hand out a meter exercise that you can do for next week.

或者是叫助教在课间,发下个星期你们要做的关于节拍的作业。

耶鲁公开课 - 现代诗歌课程节选

And I think too, a really good exercise if you wanted to do is, if you have a dictionary,

我也认为，如果你想练习，如果你有字典的话，比较好的练习

有这样的困难 - SpeakingMax英语口语达人

Incredibly, while you must show identification to board an airplane, in most states you don't have to do that to exercise your franchise.

FORBES: Fact and Comment

She asked everyone to do an exercise in automatic writing.

NEWYORKER: Creative Writing

Plug in a particular activity (running, skating, gardening, etc.), your weight and the amount of time you plan to do the exercise, and voila: you get a count of the calories you'll burn.

CNN: Site Seer: Get fit on the Net