designated driver

US /ˌdez.ɪɡ.neɪ.tɪd ˈdraɪ.vər/
UK /ˌdez.ɪɡ.neɪ.tɪd ˈdraɪ.vər/
"designated driver" picture
1.

指定司机, 代驾

a person in a group who is chosen to drive everyone home safely after drinking alcohol, and who therefore does not drink any alcohol themselves

:
I'm the designated driver tonight, so no drinks for me.
今晚我是指定司机,所以我不喝酒。
They took turns being the designated driver for their group outings.
他们轮流担任团体出游的指定司机