Majority of the volunteers donate a couple of hours a days, a couple of days a month or a period of time for a special program.

大多数志愿者都是一天服务几个小时，或一个月服务几天或为一专门项目集中服务一段时间。

youdao

There is no point in spending a couple of hours writing a post and allocating only a couple of minutes to your headline.

如果你辛苦花费好几个小时写一篇东西，只花几分钟来想一个标题，那真是毫无意义。

youdao

A couple of months in the lab can often save a couple of hours in the library.

在实验室的几个月可以节省在图书馆里的几个小时。

youdao

Anders Wilhelmson says the sanitation process can take as little as a couple of hours or as long as two to four weeks.

VOA: special.2010.03.15

Some of you may enjoy doing crossword puzzles, and perhaps doing crossword puzzles a couple hours a day is enjoyable.

有人可能爱玩填字游戏，也许每天玩几小时的,填字游戏，依然让人兴致盎然。

耶鲁公开课 - 死亡课程节选

A couple of hours, because typically there's just one battle; one side beats the other and that's the war for now.

几个小时,一般来说只有一次战斗,一方攻打另一方,这就是战争

耶鲁公开课 - 古希腊历史简介课程节选

Do you prefer a later workout and a small meal a couple of hours before you hit the trails?

CNN: Information overload: Finding fitness that works for you

She then sent a friend to get them, tweeting a thanks to us a couple of hours later, saying that she had recovered half of her stolen things.

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At the moment, for example, a straightforward colonoscopy, requiring a couple of hours in a clinic, is priced at two-thirds the rate of a full-scale splenectomy requiring 20 days of post-operative care.

ECONOMIST: Health care in France