doorman

例句：

1. 1.The doorman was very helpful and friendly.
   门卫非常乐于助人和友好。
2. 2. He asked the doorman to unlock the door for him.
   他请门卫为他打开门。
3. 3.The doorman kept a close eye on the security cameras.
   门卫密切监视着安全摄像头。