The police have been keeping her under surveillance.

警察一直把她置于监视之下.

《简明英汉词典》

The police capped the suspects under surveillance for weeks.

警方已经监视嫌疑犯好几个星期了.

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The police have been keeping him under surveillance.

警察一直在严密监视他.

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Detectives kept the quarry under surveillance for weeks.

侦探们监测那个目标已有好几个星期了.

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Placing the margins of safety settings under surveillance is helpful to remove their excess conservatism.

时刻监视它离安全限值的裕量有利于克服过剩的保守性.

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The health ministry said 21 people were currently under surveillance for suspected swine flu.

卫生部说,有21人目前正在监视可疑猪流感.

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