Mister Thornton was working to complete drawings for the design of the United States Capitol.

VOA: special.2010.01.27

So biomedical engineers have been working for many years on how to design replacement parts for joints like the hip: the artificial hip is the most well developed of those.

因此,生物医学工程师花了很多年时间,致力于设计像髋关节这样的关节替代品,尤以人工髋关节的研究最为成熟

耶鲁公开课 - 生物医学工程探索课程节选

Their coaches are working to design winning plays and powerful teams.

VOA: special.2009.07.10