"This legislation will reduce or eliminate some of those tariffs, which will significantly lower costs for American companies across the manufacturing landscape, from cars to chemicals, medical devices to sporting goods."

VOA: standard.2010.08.11

You can go to medical school. And then,this is the specialty topics that pertain to the devices engineering systems.

你可以去上医学院，到时,这个专业的课题就从属于,设备工程系统。

麻省理工公开课 - 固态化学导论课程节选

Medical historians say the devices appeared late in the nineteenth century.

VOA: special.2009.08.11