单词 | an ace up your sleeve |
释义 | ● an ace up your ˈsleeve (BrE ) (NAmE an ace in the ˈhole ) (informal ) a secret advantage , for example a piece of information or a skill , that you are ready to use if you need to 秘藏的王牌;撒手锏;锦囊妙计See also ace |
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