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》

She had put her watch in her pocket for safe keeping.

为安全起见，她把手表放进了衣袋。

《牛津词典》

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

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'

On the positive side of the ledger, millions of people have found that keeping a close watch over their money--and their spouse's--has given them an element of financial control in the midst of jobs losses, skyrocketing mortgages and rising costs for items like health care.

FORBES