If a part of your body is numb, you are unable to feel it, usually for a short time.

I was lying in a weird position and my leg went numb. 我躺卧的姿势很奇怪，结果腿都麻了。

My fingers were numb with cold. 我的手指冻僵了。

not able to feel any emotions or to think clearly, because you are so shocked or frightened, etc.

When she first heard the news, she was numb with disbelief. 她最初听到这条消息的时候，简直不敢相信自己的耳朵。

Ever since his girlfriend left him he has felt numb. 自从女朋友离开他之后，他就变得麻木迟钝了。

to make something or someone feel numb

The extreme cold numbed her face and hands. 她的脸和手在严寒中冻得都麻木了。

The children are still numbed by their father's death. 孩子们仍旧沉浸在父亲去世的打击中，麻木迟钝。

Synonyms: blunt dull