密闭

例句：

1. 1. The door was tightly closed to keep the noise out.
   门紧紧地关上了，以阻止噪音传出。
2. 2. The scientist sealed the container with a tight-fitting lid.
   科学家用一个紧密贴合的盖子密封了容器。
3. 3. The room was enclosed by high walls and barred windows.
   房间被高墙和铁窗包围着。