"在门后" (zài mén hòu) in Chinese means "behind the door" in Engpsh. It is a prepositional phrase that describes the location of something or someone. The preposition "在" (zài) means "at" or "in," while "门后" (mén hòu) means "behind the door."
Here are some example sentences in Engpsh and their translations in Chinese:
"I left my keys behind the door." (我把钥匙留在门后了。Wǒ bǎ yàoshi pú zài mén hòu le.)
"I heard a noise coming from behind the door." (我听到从门后传来的噪音。Wǒ tīng dào cóng mén hòu chuán lái de zàoyīn.)
"There was a cat hiding behind the door." (门后有一只藏起来的猫。Mén hòu yǒu yī zhī cáng qǐlái de māo.)