我问母亲是否我们应该寄一张贺卡给这个人表示感谢呢，母亲说不必了，因为他此时正在客厅里。

I asked if we could send a card to the man to thank him but my mum said that there was no need as he was in the sitting room.

youdao

同事们解释说，他们的意思是他们愿意为我做这点小事，我不必感谢，甚至可以不必留意他们干了些什么。

Colleagues explained that they wanted to perform this small service for me, and that I didn't have to thank them, or even notice what they had done.

youdao