| 单词 | secondary source |
| 释义 | secondary sourcesecondary source- Information or research that is derivative, such as a comment by a historian, an encyclopedia article, or a critical essay. |
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英语词典包含2567994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。