designated driver
US /ˌdez.ɪɡ.neɪ.tɪd ˈdraɪ.vər/
UK /ˌdez.ɪɡ.neɪ.tɪd ˈdraɪ.vər/
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
:
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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。