numb is an English adjective meaning unable to feel anything in a particular part of your body because of cold, injury, etc.
It can also be used as a verb meaning to make someone or something unable to feel, think, or react normally.
In slang usage, numb can describe emotional unresponsiveness or detachment.
Common phrases with numb:
1. numb with cold - 冻僵了
2. numb with shock - 震惊到麻木
3. numb the pain - 麻痹疼痛