mother tongue汉语翻译：
母语
【法】 本国语言, 本民族语言英语解释：
名词 mother tongue:

one's native language; the language learned by children and passed from one generation to the next同义词：maternal language, first language

His mother tongue is Spanish.他的母语是西班牙语。

English is her mother tongue.英语是她的母语。