nonplussed
adjective uk/ˌnɒnˈplʌst/ us/ˌnɑːnˈplʌst/
惊慌的;迷惑的;不知所措的
surprised, confused, and not certain how to react
I was completely nonplussed by his reply. 他的回答让我完全不知所措。
Synonyms: perplexedpuzzled
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