Because of that, in order to efficient function, then you group all the like activities together.

所以,为了使各种生理功能更加高效化,你就得把各种相似的生命活动分在一起

耶鲁公开课 - 生物医学工程探索课程节选

Steroid hormones, on the other hand, molecules like testosterone and estrogen, progesterone, the sex steroids that determine sexual characteristics and are important for reproductive function are molecules that are all derived from a similar source.

另一方面,类固醇类激素,像睾丸激素,雌激素,黄体酮这样的分子,性激素决定了性征,它对生殖功能十分重要,这类分子有着相似的来源

耶鲁公开课 - 生物医学工程探索课程节选