| 单词 | participant observing |
| 释义 | Definition of participant observing in English:participant observingnoun
Origin1930s. Definition of participant observing in US English:participant observingnoun
Origin1930s. |
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英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。