gate closure

例句：

1. 1. The gate was closed forsecurity reasons.
   出于安全原因，大门被关闭了。
2. 2. Helocked the door before leaving.
   他离开前把门锁上了。
3. 3. Sheshut the window to keep out the coldair.
   她关窗以抵御寒冷的空气。