commonplace

commonplace的解释
n. 常事,老生常谈,普通的东西
a. 平凡的,陈腐的
commonplace的例句
Many movies deal with commonplace themes.
许多电影的主题很平庸。

Soon it will be commonplace for people to travel to the moon.
不用多久，人们到月球旅行会变成常见的事了。