vee door

例句：

1. 1.The vee door is the only way in or out of the room.
   这个门是进入或离开房间的唯一途径。
2. 2. She opened the vee door to let the guests in.
   她打开门让客人进来。
3. 3.The vee door was designed to keep people out when it was closed.
   这个门设计成关闭时可以阻止人们进入。