I have been lingering here these two hours.

我在这儿泡了两个钟头。

youdao

This helicopter crew knows that. Doctors say these patients need to get medical care within two hours for the best results.

VOA: standard.2010.04.18

So how do these musicians generate two hours of music with no music in front of them?

那这些音乐家是如何持续演出两个小时的呢,在没有乐谱的情况下

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In pill form, these medications typically take two hours to kick in and a half hour via injection.

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For nine hours, these two groups clustered around each other's laptops, solving problems, sharing ideas, sharing code, and asking questions.

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These symptoms typically disappear two to four hours after exposure, but may last longer for particularly sensitive people.

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