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1·He slipped unawares into sleep.

他不知不觉地睡着了。《牛津词典》

2·Misgivings came; they grew troubled and unhappy; a sigh or two escaped, unawares.

疑虑出现了；他们变得烦恼和不快；不知不觉中发出了一两声叹息。

3·The announcement took me unawares.

这项声明令我感到意外。《牛津词典》

4·The camera had caught her unawares.

她毫无防备地被拍摄下来。《牛津词典》

5·She came upon him unawares when he was searching her room.

他在翻她屋子时，冷不防被她撞见了。《牛津词典》

6·Investors and currency dealers were caught completely unawares by the bank's action.

银行的举措完全出乎了投资者和货币买卖者的意料。《柯林斯英汉双解大词典》

7·The enemy came on us unawares.

敌人突然进攻我们。

8·Watch them, catch them unawares.

观看他们，捉住他们。

9·I unawares fall in the dream net.

我不知不觉掉进了梦网。

10·Her sudden refusal took me unawares.

她突然拒绝，让我措手不及。

出其不意地

1·The police caught the burglar unawares.

警方出其不意地抓住了夜贼。