common

It is common to see seagulls flying near the docks in the morning.

(Chinese) 早晨经常能看到海鸥在码头附近飞翔。

Colds and flu are very common during the winter months.

(Chinese) 感冒和流感在冬季月份非常普遍。

The two countries signed an agreement because they have a common interest in trade.

(Chinese) 两国签署了一项协议，因为它们在贸易方面有共同利益。

Despite their different backgrounds, they found they had a lot of common ground.

(Chinese) 尽管背景不同，他们发现彼此有很多共同点。