So the fact that I'm erasing it does not mean that the computer erased that memory or over wrote those values with all zeros.

事实上，我清除它的意思,不是说计算机把内存清除,或者用0覆盖这些值。

哈佛公开课 - 计算机科学课程节选

I print out -- and this is only wrapping - because of the big font -- I print out, "I demand that you give me a positive integer."

我打印出来--这个字符相互覆盖了,因为用的是大字体-,我打印：“我需要你给我一个正整数“

哈佛公开课 - 计算机科学课程节选