The Immigration and Naturalization Service lacks the resources, and apparently the inclination, to keep track of the estimated 2 million foreigners who have intentionally overstayed their welcome.

移民归化局缺乏资源，显然也不愿跟踪已估计的200万名故意逗留过久的外国人。

youdao

Lab managers can track all lab resources from a centralized resource repository, and they can track service requests from the test team.

实验管理员可以从中央资源储存库中追踪所有的实验资源，而且他还能够从测试团队中追踪服务请求。

youdao

Service businesses can track velocity, too.

服务企业也能够跟踪存货周转率。

youdao

It was not clear when or for how long the Marshals Service lost track of them.

CNN: U.S. lost track of two with known or suspected terror ties

The service can track deals shared over social media services like Twitter and Facebook.

FORBES: ChompOn Brings GroupOn-Like Widget To The Wider Web

And Google Now requires you to compromise some privacy, by allowing the service to track your location and search history.

WSJ: From Google, the Toughest Challenger to the iPad