remain cautious and ready for a possible emergency
保持警惕以應(yīng)付可能的突發(fā)事件
(of a woman) go to the toilet (used as a euphemism)
(婉)（女人）上衛(wèi)生間
To be ready for a challenge with little warning.
準備萬一：準備接受事先沒有什么警告的挑戰(zhàn)
To make a quick departure; run away.
迅速離開；逃之夭夭