Set a timer if you have to.

如果有必要的话设个定时器。

youdao

And so we do have a timer.

而我恰好有这样的计时器。

youdao

So set a timer and then forget about time.

所以，设置一个计时器，然后忘掉时间吧。

youdao

We're also posting a practice exam for you to take, so after you're completely done your studying, it's good to have everything done before you take the practice exam, and then sit down just with this sheet here and your calculator, and ideally a timer, and make sure you can do the practice exam in the allotted amount of time.

我们还将给出一份模拟试题，因此在你完全复习好之后，最好先复习完,再做这份模拟试题，坐下来,只拿出这张表与计算器，最好还有个计时器，确保自己完成模拟题,在规定的时间内。

麻省理工公开课 - 化学原理课程节选

Setting a timer in your smartphone or watch is a simple way to accomplish this.

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Trade every 18 months and you'd better be one heck of a timer.

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Set a timer for 5 minutes and write down as many things you can think of that your company could improve.

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