| 词汇 | have sth at your fingertips |
| 释义 | ● have sth at your ˈfingertips to have the information , knowledge , etc . that is needed in a particular situation and be able to find it easily and use it quickly 掌握（信息等）；熟悉，精通（知识等）；对…了如指掌；有…随时可供使用See also fingertip |
| 随便看 |
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