It's reproduction of the virus and passage of that virus onto new cells which causes the problems with disease that we associate.

病毒一旦繁殖并进入新细胞,就会带来相关病症的危害

耶鲁公开课 - 生物医学工程探索课程节选

So, reproduction, proliferation, cell growth happens and then those cells become more differentiated.

所以 繁殖 扩增 细胞开始生长,然后这些细胞开始分化

耶鲁公开课 - 生物医学工程探索课程节选

And it's evolved due to survival and reproduction.

它通过生存和繁衍进化。

耶鲁公开课 - 心理学导论课程节选

What matters is reproduction.

是繁衍后代的问题。

耶鲁公开课 - 心理学导论课程节选