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

And one factor in Parkinson's is too little of a neurotransmitter known as dopamine.

引起帕金森症的一个病因,便是严重缺乏一种叫做多巴胺的神经递质

耶鲁公开课 - 心理学导论课程节选

Parasitic organisms like protozoa and worms which are - which can cause terrible diseases.

而某些寄生生物,如原生动物和蠕虫,可以引起严重疾病

耶鲁公开课 - 生物医学工程探索课程节选