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》

U.S. officials have been keeping close watch on the situation.

美国官员们一直密切关注着事态的发展。

《柯林斯英汉双解大词典》

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

VOA: standard.2010.05.18

Visitors to the centre can watch close-up video images of the birds and their nest on a big screen.

BBC: Elderly osprey set for 50th egg

These close-range effects are wonderful to watch.

BBC: Saturn's beauty and power

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