要求学生为每星期一次的研讨班预先准备好材料。

Students are asked to prepare material in advance of each weekly seminar.

《柯林斯英汉双解大词典》

我大约每星期一次做腿部运动，而且绝大部分的腿部训练包括芭蕾舞步和瑜伽伸展运动。

I do exercises for legs approximately once a week and most of my leg workouts include ballet movements and yoga stretching.

youdao

现在，我经常运动，每星期一次。

Now, I often exercise once a week.

youdao