keep (all) your wits about you
US /kiːp ɔl jʊər wɪts əˈbaʊt ju/
UK /kiːp ɔl jʊər wɪts əˈbaʊt ju/
1.
保持警觉, 头脑清醒
to stay alert and be able to think quickly in a difficult or dangerous situation
:
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You need to keep all your wits about you when driving in heavy traffic.
在交通繁忙时开车，你需要保持警觉。
•
It's a dangerous situation, so keep your wits about you.
情况很危险，所以保持警惕。