| 单词 | know what one is talking about |
| 释义 | know what one is talking aboutBe expert or authoritative on a particular subject: I know what I’m talking about—I’ve built up three businesses from scratch...
See parent entry: talk |
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英语词典包含243303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。