来自《耶鲁大学开放课程：1600年后西方社会的流行病 第15集 第15集》

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  and the plasmodium has an extremely complicated lifecycle
  疟原虫有着极其复杂的生命周期
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  in both man and mosquito.
  无论在人的身体中还是蚊子
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  And the involvement of the mosquito
  而蚊子是如何参与进来
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  also is scientifically complicated;
  也是具有复杂的科学原因的
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  in other words,
  换句话说
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  it was useful and important that Grassi was a naturalist,
  它有益处而且重要
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  was well as a physician.
  格拉西不但是个医生 同时也是博物学者
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  Parasitology was scientifically interesting,
  寄生虫学很有趣
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  and intellectually so.
  同时也挑战智慧
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  To study malariology, one needed to be a physician,
  为学习疟疾学 首先要成为一个医生
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  but also an entomologist, a naturalist,
  也必须是昆虫学家和自然主义者
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  and to have a knowledge of the basic sciences.
  并拥有基本的科学知识