| 单词 | time depth |
| 释义 | time depthnoun : a period of time during which a culture, language, or group of languages has been undergoing independent genetic development a language with a time depth of 5000 years |
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英语词典包含469781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。