读音不相同：[sʌn] ， /penz/

The sun fell below the sea level and then disappeared.

太阳落到了海平面以下，然后消失了。

Three suns passed, I still haven't heard from him.

三天过去了，我还是没有收到他的音讯。

The sun rises in the east.

太阳从东方升起。

The pens sell for just 50p each.

这些钢笔每支只卖50便士。

Pens are kept in the middle drawer.

钢笔在中间那个抽屉里。