gate gurgle valve

例句：

1. 1. The gatekeeper let the visitors in.
   看门人让访客进入了。
2. 2. The gates of hell are always open to those who seek redemption.
   地狱的入口总是对寻求救赎的人敞开的。
3. 3. The gates were closed and locked, but the thief managed to break through.
   大门被关闭并上锁了，但小偷设法突破了。