| 单词 | protolanguage |
| 释义 | Word Frequency protolanguage(ˌprəʊtəʊˈlæŋɡwɪdʒ) noun an extinct and unrecorded language reconstructed by comparison of its recorded or living descendants Also called: Ursprache |
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英语词典包含233703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。