permeate|permeated|permeates

这层薄膜可以让空气渗透过去。

This membrane allows air to ___permeate through it.

欢乐的气氛弥漫了整个房间。

A joyful mood ___permeated the entire room.

凛冬的寒意弥漫在整个森林中。

The cold of winter ___permeates the entire forest.