Definition
To remain alert and quick-thinking in order to react effectively to unexpected situations or dangers.
保持警覺；隨機應變
In this volatile market, you must keep your wits about you to protect your investments.
在這個波動的市場中，你必須保持警覺以保護你的投資。
It's important to have your wits about you when traveling in a new city.
在新城市旅行時，保持警覺非常重要。
She always has her wits about her when dealing with emergencies, reacting quickly and calmly.
她在處理緊急情況時總是保持警覺，反應迅速且冷靜。