The police are keeping a close watch on the suspect's movements.

警察正在密切监视嫌疑犯的活动。

《牛津词典》

The government is keeping a close watch on how the situation develops.

政府正在密切注视着形势的发展。

《牛津词典》

He said India is keeping a close watch on the next steps taken by the Pakistani leadership.

他回答说，印度正在密切注视巴基斯坦领导人下一步采取的行动。

youdao

The Environmental Protection Agency, is keeping a close watch on threats to the delicate eco-system along the coastline.

VOA: standard.2010.05.18

Lord Harris, who died in 1984, could hardly have imagined how the now-ubiquitous electronic quartz watch would make time-keeping cheap, dependable and above all effortless.

ECONOMIST: Craftmade timepieces

Which leaves only Rolex, an unstoppable force that holds 25% of the high-end market with basically one watch, the Oyster, while keeping the company's inner workings almost completely hidden behind a gold-clad fortress in Geneva (see "As Tight as an Oyster").

FORBES: Time Is Money

Some have suggested that the solution lies in technology - telecare with devices "keeping watch" for the unforeseen crisis or fall.

BBC: 'Care gaps and funding gaps'