at unawares
出其不意,突然
Un·a·wares adv. Without design or preparation; suddenly; without premeditation, unexpectedly. “Mercies lighting unawares.”
Lest unawares we lose
This our high place, our sanctuary, our hill. --Milton.
At unaware, or At unawares, unexpectedly; by surprise.
He breaks at unawares upon our walks. --Dryden.
So we met
In this old sleepy town at unaware. --R. Browning.
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