I exercise three or four times a week.

我一周锻炼三四次。

youdao

I need about twenty minutes of exercise three times a week.

我需要一周三次大约20分钟的锻炼。

youdao

I need about twenty minutes of exercise three times a week.

我需要一周三次大约20分钟的锻炼。

youdao