For both John of the book of Revelation and for John Milton, it's the superior male of the species that's been singled out for the glorious practice of sexual abstinence.

对约翰的《启示录》和弥尔顿来说，是男人在人类中的优越地位,让禁欲的实行被挑选出来了。

耶鲁公开课 - 弥尔顿课程节选

This was not a naturally occurring attenuated virus as used in smallpox, but a virus that was attenuated in the laboratory, basically by propagating it in culture and looking for mutants that were formed as you propagated this virus under different experimental conditions.

这不是在制造天花疫苗时,使用的那种天然减毒病毒,而是一种在实验室中被人工弱化的病毒,基本上是通过在细胞中培养繁殖后,从这些培养出来的病毒中挑选出,不同实验环境下的变异体

耶鲁公开课 - 生物医学工程探索课程节选