He does it for the sake of adventure, to improve himself, to show he's worthy of respect and love from his lady.

他做这个是为了探险，提高自己，证明他是值得他的夫人尊敬和爱戴的。

youdao

But the Romance Poetry describes a lot of the inner feelings, the motivations, psychology, of a knight trying to improve himself, to better himself, so that he's worthy of the love of a woman.

但是浪漫诗歌描述了很多内在的感情，动机，心理，一个骑士试图通过改善自己，使自己有价值，能得到女性的青睐。

youdao

He enjoys working in a team, so that he can improve himself better.

他喜欢团队工作，这样可以让他更好地提高自己。

youdao

Pernetti said Rice also worked hard to improve himself with the counseling.

NPR: Reaction To Rice Video Has Rutgers Reconsidering

And he had a laudable wish to improve himself educationally.

ECONOMIST: Stalin

He has a desire to improve on himself and I have never seen that desire in him before.

BBC