汉语是我们的母语，也是世界上的一个大语种。
Chinese is our mother tongue and it's one of the main languages in the world.
外语课，可用于继续提高汉语或选修其母语以外的其他外国语种，或选修经商定的其他课程。
Foreign language class, which is useful to improve your Chinese or other selected foreign languages besides your mother tongue.
意大利语和西班牙语乃是源出于一个母语的同源语种。
Italian and Spanish are kindred languages with the same origin.
以英语为母语的人，即使所讲的英语种类不尽相同，他们也可以互相理解。
Native English speakers can understand each other even if they don't speak the same kind of English.
以英语为母语的人，即使所讲的英语种类不尽相同，他们也可以互相理解。
Native English speakers can understand each other even if they don't speak the same kind of English.
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