be lost for wordsSAYSURPRISEDto be unable to say anything because you are very surprised, upset etc 〔因非常惊讶、难过等〕说不出话来，不知说什么才好 For once in her life, she was lost for words. 她平生就这一回不知道说什么话才好。
be lost for words• For once in her life, she was lost for words, and uncertain of her argumentative ground.• He was lost for words at the time, and had to apologise and thank the donors later in private.
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