| 单词 | primary source |
| 释义 | primary sourceˌprimary ˈsource noun [countable] social studies, history a written or spoken description of an event by someone who was actually there when it happened |
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英语词典包含48224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。