Commonly used as guard dogs, watch dogs, or police dogs.

通常被养为保安犬，看门狗或警犬。

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For the rest he was a fierce little old man, who mocked terribly at softness in any one, and who regarded himself as guard dog to the two young artists in the studio above.

要说其他方面，他是个好斗的小老头，要是谁表现出一点软弱，他便大肆嘲笑，并把自己看成是楼上画室里两位年轻艺术家的看护人。

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He escaped by passing himself off as a guard.

他伪装成看守人而得以脱逃。

《牛津词典》

It tells the story of a German woman who served as a guard at a Nazi death camp during World War Two.

VOA: special.2009.02.20

The Essex stood half over the other prophet as if it were pleased to guard what it had finally brought down. The man didn't look so much like Haze lying on the ground on his face without his hat or suit on. A lot of blood was coming out of him and forming a puddle around his head.

埃塞克斯看着这个先知，好像很高兴地守卫着,自己撞倒的这个人，这个男人看起来与海斯并不相像,没有戴着帽子或穿着西装趴在地上，一大堆血,从他的体内涌出，在头部附近形成了一个水坑状的东西。

耶鲁公开课 - 1945年后的美国小说课程节选

After thirty-six hours, Brown was captured in the building that served as the fire engine and guard house.

VOA: special.2009.11.06

It seemed risky, kitschy and even a bit avant guard (or as avant guard as characters created for Berkshire Hathaway can be, anyway).

FORBES: Magazine Article

It seemed risky, kitschy and even a bit avant guard (or as avant guard as characters created for Berkshire Hathaway (nyse: BRKA - news - people ) can be, anyway).

FORBES: Endangered Species

Mr Okono, who is working as a security guard as he studies for a masters degree, can see himself applying for British citizenship one day.

BBC: Sheraz Ahmed