| 单词 | an ace up your sleeve |
| 释义 | an ace up your sleeve an ace up your sleeve (US ALSO an ace in the hole) ► F0 secret knowledge or a secret skill that will give you an advantageThesaurus+: ↑Advantage and disadvantage |
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英语词典包含67674条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。