But suddenly I heard a loud sound.

但突然我听到一个响亮的声音。

A loud sound can easily awaken them.

一个大的声音可能等闲地将它们吵醒。

We astonished to hear the loud sound.

我们被那巨大的声音吓了一跳。

With a loud sound, birds flew in all directions.

随着一声巨响，鸟群朝各个方向飞去。

The fall of nuts from the tree makes a loud sound.

树上的坚果掉到地上，发出很大的声音。