closed user group with incoming access

例句：

1. 1.The door is closed and we can't get in.
   门关着，我们进不去。
2. 2.The factory is closed for maintenance.
   工厂因维修而关闭。
3. 3. The room was closed off from the rest of the building.
   房间与大楼的其他部分隔绝了。