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词组 have an ace up your sleeve
释义

have an ace up your sleeve have an effective resource or piece of information kept hidden until it is necessary to use it; have a secret advantage.

☞ The ace is the highest playing card in its suit in many card games, so a cheating player might well hide one to use against an unwary opponent. A North American variant is an ace in the hole. The next two idioms are also based on this meaning of ace.

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更新时间:2025/5/6 1:35:47