改善

你要改善一下你的英語。

You have to polish your English.

雖然已經踏入了新世紀，但是工廠僱用童工的情況還是沒有改善。

At the turn of the century, children still worked in factories.

我想改善我的英语发音。

我想改善我的英語發音。

I would like to improve my English pronunciation.

它有改善了。

It's improved.

有很多的方法可以改善人的一生。

There are many ways to improve one's life.