B1 a person or group of people whose job is to protect a person, place, or thing from danger or attack, or to prevent a person such as a criminal from escaping卫兵,警卫;看守,守卫
to be kept in a place by a group of people who have weapons处于武装人员的保护(或守卫)之下
to be responsible for protecting someone or something, or for preventing someone from escaping守卫;站岗;看守
a ceremony held outside Buckingham Palace in London, where one set of soldiers replaces the soldiers who have finished their time on duty standing outside the palace白金汉宫皇家卫队换岗(仪式)
More examples
They tried to buy the guard at the bank off but he told the police and the gang were arrested.
The guards failed to observe who delivered the package.
The border guards stopped me and asked to see my papers.
There are guards on the door to keep out undesirables.
Armed guards were stationed around the airport.
UK US conductor a railway official who travels on and is responsible for a train列车长
a device that protects a dangerous part of something or that protects something from getting damaged保护装置;保护用品;保护器
B2 to protect someone or something from being attacked or stolen保卫,守卫,保护
B2 to watch someone and make certain they do not escape from a place看守,监视
More examples
The village was guarded by a ragtag group of soldiers.
The offices were securely guarded.
Armed security officers are employed to guard the president.
The police officers guarding the door let in the celebrities, but they prevented us lesser/mere mortals from going inside.
He was employed to guard the singer when she was on tour.
to keep information secret保守(秘密);遮掩
informal for the National Guard 国民警卫队(the National Guard的非正式说法)
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