| 词汇 | are you kidding |
| 词源 | are you kidding? “You must be joking, you can’t be serious.” The Americanism no kidding probably suggested the longer ex- clamation, first recorded in about 1945. |
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英语词源词典收录了13259条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。