1. 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。
2. 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。
3. 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。
4. Some use them to keep a close watch on the demand for their line of work or gather information on compensation to arm themselves when negotiating for a raise. 有些人用它来密切关注自己所在行业的需求情况,或者收集有关薪酬的信息,以便在加薪谈判时为自己做好准备。