They sing out of their big noses!

他们用大鼻子来唱！

I sing out loud and merrily.

我就要放声歌唱，欢天喜地。

I always sing out of tune, you see.

一你知道，我唱敉总是走调。

And I'll try not to sing out of key.

你会站起来离我而去吗？

That's why I sing out.

这就是我歌唱的原因。