at a loss
成語所屬單字loss
at a loss — 慣用語
1. feeling confused or uncertain about what to do or say, especially in a surprisin
1.慣用語
釋義
不知所措；困惑
feeling confused or uncertain about what to do or say, especially in a surprising or difficult situation.
例句
Christopher was at a loss when the customer asked a technical question he had never heard before.
The teacher was at a loss to explain why all the students had scored so poorly on the test.