gate turn-off

例句：

1. 1.The gatekeeper opened the gate for us.
   看门人为我们打开了大门。
2. 2. The gates of hell are never closed.
   地狱的门永远不会关闭。
3. 3. The gatekeeper was very strictwith everyone who entered the building.
   看门人对所有进入大楼的人都非常严格。