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