I give them a limit of half an hour and then stop.

我给他们半个小时的时间，然后叫停。

youdao

Every half an hour I stop (work) to smoke a cigarette.

我每半小时停下工作抽一支烟。

youdao

Every half hour I stop to smoke a cigatette. ?

每半小时我就停下来去吸支烟。?。

youdao

Every half hour I stop to smoke a cigatette. ?

每半小时我就停下来去吸支烟。?。

youdao