严密监视

nǐ gōng zuò shí yǒu rén yán mì jiān shì zhe zhēn jiào rén nán kān

你工作时有人严密监视着，真叫人难堪。

It is embarrassing to have someone looking over your shoulder while you're at work.

tā chū yù yǐ lái jǐng chá yī zhí zài yán mì jiān shì tā

他出狱以来，警察一直在严密监视他。

The police have been keeping tabs on him since he got out of prison.

jǐng chá yán mì jiān shì nà xiē liú làng zhě

警察严密监视那些流浪者。

Police kept a close watch on the vagrants.