Her mother is busy cooking in the kitchen. be busy doing sth.

忙着做某事（她的母亲正在厨房忙着做饭。）

youdao

Yes, your employees might be busy, but what are they busy doing?

对，你员工也许很忙，但是他们在忙什么呢？

youdao

Yes, your employees might be busy, but what are they busy doing?

对，你员工也许很忙，但是他们在忙什么呢？

youdao