We usually fly, first to California to see our son Scott and spend a week or more with him trying to catch up on everything we've missed.

我们通常先坐飞机去加州看儿子斯科特，然后花一个多星期的时间陪他，试图弥补我们错过的一切。

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Whether or not we can catch up on sleep—on the weekend, say—is a hotly debated topic among sleep researchers.

我们是否能在周末补觉是睡眠研究者们激烈争论的话题。

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Whether or not we can catch up on sleep on the weekend, say — is a hotly debated topic among sleep researchers.

例如，我们是否能在周末补觉是睡眠研究者们争论的热点话题。

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They worked quickly to catch up. Less than a year later, on October first,nineteen fifty-eight, the National Aeronautic and Space Administration,or NASA, began operations.

VOA: special.2010.08.20

I'm really tired and I have a lot of school work to catch up on.

我真是累坏了，我还有许多落下的功课得补起来。

I'd like 实战 - SpeakingMax英语口语达人

They do so mainly to catch up on the news, the sports results and the weather.

ECONOMIST: America is finally poised to get mobile television

Now you can catch up on kooky cat videos when you're out of network.

CNN: 50 new tech tools you should know about

And that's not all, you've still got your history, and your maths to catch up on!

BBC: On a Knife Edge