| 词汇 | dog does not eat dog |
| 词源 | dog does not eat dog; dog eat dog. In the 16th century dog does not eat dog was a popular saying, but over the years dog eat dog (qv), an Americanism, has come to be heard more. |
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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。