twice a week

基本解释

She does for us twice a week.
她每周兩次來幫我們做家務。
I mop the kitchen floor twice a week.
我一星期兩次用拖把拖廚房的地板。
He continues to return twice a week on his "babysitting nights" and every other weekend, so his contact with the children hasn't really changed.
在每周兩次的“照顧孩子之夜”、以及每隔一個周的周末，他還是會廻來，因此他與孩子的接觸實際上竝未改變。

And they meet twice a week after school to learn dance moves that go with the music.
As much as I might talk on stage twice a week it turns out that it's really by doing and really by diving in and getting your hands dirty that you really take away the course's lessons.
我一周上兩次課,就算說得再多，也不如你們親自動手,通過真正的深入研究,才能學到知識。
哈彿公開課 - 計算機科學課程節選
So it'll be a time once or twice a week where they will be in their office.
所以，他們大概每周有一兩次會在辦公室裡。
與教授的麪談 - SpeakingMax英語口語達人

That was far easier for me to do than to eat Tasti D-Lite twice a week.
FORBES: Are You Trying to Eat Better?