communication in the mother tongue 母语沟通能力 ; 母语沟通的能力
the mother tongue education 母语教育
safety of the mother tongue 母语安全
The errors in the second language acquisition are always restricted by the properties of the mother tongue and the goal language.
第二语言习得中偏误的出现总是受到母语和目的语特点制约的。
参考来源 - 从哈萨克族习得汉语反义词的偏误反观汉语反义词的特点·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
In different countries around the globe, English is acquired as the mother tongue; in others it is used as a second language.
在世界各地的不同国家，英语作为母语被习得；在其他地方，它被用作第二语言。
The mother tongue is Macedonian, a south Slavic language.
母语是马其顿语，一种南斯拉夫人的语言。
Perhaps Germans realise that English poses little threat to the mother tongue of 100m people.
或许是德国人认识到对有1亿人讲的母语来说，英语构成的威胁最小吧。
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