And that does two things: bug one, it helps catch bugs in your code, and secondly it often converts it into a more efficient sequence of instructions before you actually go off and run it. All right?

这有两点好处：,第一是可以帮助你发现程序中的，第二是把你的代码,在运行之前,转换为更有效率的指令的集合，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

Well, the vaccine turned out to be about 70% effective.

疫苗的有效率为百分之七十左右

耶鲁公开课 - 生物医学工程探索课程节选