Why does my stomach make noises?

为什么我的肚子会“咕咕”叫？

They make noises when they are hungry.

他们饿的时候就制造噪音。

You shouldn't make noises in the reading room.

你不应该在阅览室喧哗。

I have been told many times not to make noises.

有人多次告诉我不要制造噪音。

Machines and engines make noises that annoy us constantly.

机器和引擎经常发出恼人的噪音。