1
work as a door guard
He works as a door guard at the hotel.
他在酒店当门卫。
门警装置
先理解核心含义，再看它在真实句子里的用法。
门警装置
a security device that monitors or controls access through a door
He works as a door guard at the hotel.
他在酒店当门卫。
相关中文义项：门警装置；门卫；车门卫士
someone who guards an entrance
The door guard checked everyone's ID before letting them into the building.
门卫在允许人们进入大楼之前检查了每个人的身份证。
The office installed a door guard to prevent unauthorized entry.
办公室安装了一个门警装置以防止未经授权的进入。
The car's door guard protects the door handle from scratches in tight parking spaces.
汽车的车门卫士保护门把手在狭窄停车位免受刮擦。
He works as a door guard at the hotel.
他在酒店当门卫。
The company hired a door guard for security.
公司雇了一名门卫负责安保。
We need to install a door guard on the main entrance.
我们需要在主入口安装一个门警装置。
Not this
There is door guard at the entrance.
Use this
There is a door guard at the entrance.
“door guard”是可数名词，在英语中单数可数名词前通常需要加冠词a或an，而汉语中没有冠词概念，学习者容易遗漏。
Not this
He door guards the building.
Use this
He works as a door guard at the building.
“door guard”是名词，不能用作动词。学习者受汉语词汇兼类影响，误将“door guard”当作动词使用。
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可数名词，通常指门卫或门警装置。
Dictionary facts from ECDICT, WORDNET.