One of the questions I've asked is: are safe sex,condoms and antiretroviral drugs a sufficient response to the health catastrophes that we face? The debate and anger over the issue drew the attention of former South African President Nelson Mandela, who spoke at the closing ceremonies.

VOA: standard.2010.05.17

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

It's a story of catastrophes.

这是关于一场大灾难的故事。

耶鲁公开课 - 新约课程节选