We're maybe where civil engineering and bridge building was 100 years ago.

这个水平可能与土木工程和桥梁学,一百年前的研究水平相同

耶鲁公开课 - 生物医学工程探索课程节选

And that makes it for me a very exciting time to study this because the problems aren't solved in the way that bridge building is largely a solved problem now.

对于我而言,这是一个非常激动人心的时代,因为一百年前桥梁建设中难以解决的问题,在今天都得到了解决

耶鲁公开课 - 生物医学工程探索课程节选