单词 | an ace in the hole |
释义 | an ace in the hole(US) or chiefly British an ace up your sleeve ◊ If you have an ace in the hole or an ace up your sleeve, you have a powerful and often secret weapon, advantage, etc., that you can use if it is needed.秘藏的王牌;秘密武器
⇒ Main Entry: 1 ace |
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