And nine hours a week of outside-the-class work.

每周还有九个小时的课堂外工作。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I work three days a week and 10 Saturdays a year for the weddings.

我每周工作三天和一年十个周六，是关于婚礼筹备的工作。

妈妈亲手做的味道 - SpeakingMax英语口语达人

Americans spend the most time out of any other people in the world volunteering in average four hours a week, volunteering outside their job which may also have a social objective more than any other people in the world.

比其他任何人所花的时间都多,平均每周有四个小时做志愿者的工作，做与自身工作无关的善事,他们比世界上其他人更具社会目标。

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