keep an eye on sth.简单

At RoMan Manufacturing, a maker of electrical transformers and welding equipment that his father cofounded in 1980, Robert Roth keeps a close eye on the age of his nearly 200 workers.

罗曼制造公司是一家生产变压器和焊接设备的企业，由罗伯特·罗斯的父亲于1980年参与创办，在这里，罗斯密切关注着他手下近200名工人的年龄。

believes that it is important to keep a close eye on the age of his workers.

认为密切关注工人的年龄很重要。

The teachers' unions keep an eye on schools, the CCPOA on prisons and a variety of labor groups on health care.

教师工会盯着学校，加州惩教人员协会盯着监狱，各种劳工团体则盯着医疗保健。