0 a flat object that is used to close the entrance of something such as a room or building, or the entrance itself -- 门
the front door 前门
the back door 后门
a car door 车门
a sliding door 推拉门
She asked me to answer the door (= go and open it for someone). 她让我去开门。
Sam only lives a few doors (away/up/down) from us. 萨姆就住在与我们相隔几户(远/以北/以南)的房子里。
The people next door (to us) (= living in the house next to us) aren't very friendly. 住在(我们)隔壁房子里的人不太友好。
I'd only gone a little way down the street when I remembered I hadn't locked the door.
He got his bag caught in the train doors as they were closing.