closed in

封闭, 包围

例句与用法：

Darkness closed in upon us.

暮色笼罩着我们。

The problems closed in.

问题纠结在一起

The days are closing in now that autumn is here.

秋天来到了，白天渐渐短了。

The people were trapped when the enemy army closed in.

人们陷入从四面逼近的敌军包围之中。