peephole
n. 窥视孔
复数 peepholes
例句
He squinted through the peephole.
他眯起眼睛靠近窥视孔看了看。
So I figured there was a peephole.
所以我认为那里有一个窥视孔。
Look through the door's peephole before opening your door.
在开门之前,在门口的窥视孔看下。