周两次的英文是twice a week。
twice : adv.两次;两遍;两倍。
week: n.周;星期;礼拜;一周;天的时间; (除星期六和星期日以外的)五天。
网络释义
1. 一周两次: twice a week | biweekly | D | BE two for a week.
2. 大约一周两次: about twice a week.
3. 通常一周两次: Usually two times a week.
双语例句
1、另外，我还要一周两次带我妈妈上医院。
And I have to take my mother to hospital twice a week.
2、你们多久上一次实验课？一周两次。
How often do you have science classes? Twice a week.
3、一周两次或者三次都没有问题。
Twice or three times a week would be good.