动词短语中文翻译
中文翻译：Unknown
同义词：
['out of the blue', 'caught off guard', 'caught unprepared']
例句：
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1. He was caught off guard by the unexpected question.
他突然被那个意想不到的问题难住了。
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2. She was caught off guard when she saw the unexpected guest at her door.
她看到门口突然出现的客人时，感到措手不及。
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3. The sudden announcement caught him off guard.
突如其来的宣布让他措手不及。