Yea... I like to hum and sing to myself when I'm alone.

我自己一个人的时候喜欢哼歌或者唱歌。

youdao

You can even sing and whistle or hum and whistle at the same time.

你可以边唱边吹，或者边哼边吹。

youdao

You can even sing and whistle or hum and whistle at the same time.

你可以边唱边吹，或者边哼边吹。

youdao