他每三周(每隔两周)见到他的女朋友一次。

He sees his girl friend once every three weeks.

youdao

我每四周(每隔三周)回家一次。

I go home every four weeks.

youdao

随后可以每两到三周询问一次。

Then scale back to once every two to three weeks.

youdao

随后可以每两到三周询问一次。

Then scale back to once every two to three weeks.

youdao