If you want to play an instrument well, you've got to stick at it.

要想练好一种乐器，你必须持之以恒。

To help them achieve academic excellence, encourage them to sing or play an instrument.

鼓励他们唱歌或者弹奏乐器有助于他们在学业上取得优异的成绩。

I'm lucky I can play an instrument.

我很幸运能掌握一种乐器。

Can you play an instrument?

你能弹奏乐器么？

Do you play an instrument or sing?

你会玩乐器或者唱歌吗？