all at sea
... achilles’heel薄弱环节;致命的弱点 all at sea茫然不知所措 all bark and no bite只敢说不敢做 ...
at a loss
... 澳大利亚命名下一个十年:One-ders 茫然不知所措At a loss 我讨厌我的工作I hate my job ...
in bewilderment
... puzzle 某问题因复杂而令人费解 perplex 难以理解(包含焦虑不安,不知如何解决的意思) in bewilderment 茫然不知所措 ...
puzzled
... puzzled 茫然不知所措 stressing 加重每一个音节 go on to do sth. 继续做别的事情 ...
You say you don't know