And there are many reasons for this, our success in eliminating infectious diseases as causes in the developed world.

还有很多原因,在发达国家我们成功地消灭了感染性疾病

耶鲁公开课 - 生物医学工程探索课程节选

Schistomiosis, which is a worm that lives in river waters, causes terrible diseases that are still prevalent in many parts of the world.

血吸虫,是一种生存在河水中的蠕虫,可以引起严重疾病,并仍在世界上众多地区广泛流行

耶鲁公开课 - 生物医学工程探索课程节选