These are all jobs that only need you to work between ten and twenty hours per week.

这些工作都只需要你每周工作10到20个小时。

youdao

Take brisk exercise, such as walking, cycling and swimming, for at least 30 minutes three times per week – and use the stairs whenever you can

采取轻快的锻炼方式，例如：走路，骑自行车和游泳。 每星期至少三次；每次至少30分钟。

youdao

While this number is still high, it compares to 3 812 cases in the immediately-preceding week and over 8000 cases per week at the beginning of February.

尽管这一数字依然很高，但与前一周内报告的3812个病例以及2月初每周有8000多个病例的情况相比，情况已大有好转。

youdao

And the greatest risk reductions were in those who took more than fourteen aspirins per week.

VOA: special.2009.09.01

And we do two to three concerts per year. We have two rehearsals a week.

我们每年举行二到三次音乐会。每周练习两次。

积极参与俱乐部活动 - SpeakingMax英语口语达人

And once per week, my poor mother, now 79, would have to make sure she wasn't wearing her nice clothes as she squeezed past that ancient hunk of Detroit iron to get to the garbage cans.

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Lawyers say the signs in the lobby listing the price of admission with the word "recommended" below in smaller type violate a 1893 law mandating the public be admitted free of charge at least five days and two evenings per week in exchange for monetary grants and rent-free use of city-owned land.

BBC: Metropolitan Museum of Art's entrance fee 'deceptive'

People are becoming less healthy because after working 40 hours a week and commuting another 30 hours per week, something has got to give and often times it is meal time.

FORBES: Can Yahoo Really Be Doing This?