我在学普通话，因为它显然是一门在学习上非常具有挑战性的语言，。

I'm learning Mandarin Chinese because it is apparently a very challenging language to learn.

youdao

我在学普通话，因为它显然是一门在学习上非常具有挑战性的语言，。

I'm learning Mandarin Chinese because it is apparently a very challenging language to learn.

youdao