| 单词 | mother tongue |
| 释义 | mother tongue noun countable usually singular ■the first language that you learn when you are a baby, rather than a language learned at school or as an adult 母语；本国语；本族语 |
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101BT英语在线翻译词典收录了36528条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。