at a

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at a

at a
at a

at a
困惑,不知所措
例如:
Many people are at a loss as to what to do in case of a real fire.
一旦真的发生火灾,许多人就不知所措,不知道该怎么做.

亏本的;困惑不解;

at a loss 是为难,不知所措的意思