例句：
Would you open the door for me, please?
请你给我开门好吗？
He had to lower his head to get through the door.
他得低头才能过这道门。
This door should only be used in an emergency.
这道门只能在紧急情况下使用。
I had a letter from the people who used to live next door.
我接到了过去的邻居写来的一封信。
You can't open the door from the outside.
你从外边打不开这个门。