But I need to tell you ahead of time that this journy is very tough and great perseverance is needed.

老师得给你打个预防针，这个过程可能挺辛苦，需要毅力。

youdao

But I need to tell you ahead of time that this journy is very tough and great perseverance is needed.

老师得给你打个预防针，这个过程可能挺辛苦，需要毅力。

youdao