我相信如果我刻苦努力，我的梦想将会实现。

I believe that if I am hard-working, my dream will come true.

youdao

我深知业精于勤荒于嬉，在大学期间，我刻苦努力，虚心求学。

I fully realized the knowledge and skill improve with diligence uncultivated land in plays, in university period, I assiduous diligently, modestly study.

youdao

幼年时我纳闷为什么我非得如此刻苦努力。

As a child, I wondered why I had to struggle so.

youdao