And will make mistakes. And therefore, you write your programs so that catastrophes don't occur when those mistakes are made.

就是人是很愚蠢的，会犯错误的，因此，你要这样设计你的程序,以达到当犯错误时避免大事故的目的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Then the deal is that when you sell the house they subtract -you've got to pay this.

那么当你售出房子后,他们会从中减去,这个余额,这就是你要付给他们的

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Now, all you have to do is introduce that virus into an organism and the virus will do what it naturally does, which is infect some cells.

剩下你要做的就是将之导入某个生物,病毒自己就会做好自己的本分,也就是去感染细胞

耶鲁公开课 - 生物医学工程探索课程节选