E-textbooks can cost half the price of a new print textbook.

VOA: special.2009.09.03

Then the next thing in the loop, we're going to enter a nested loop and say for every college in the list e, we're going to print the name of the college.

循环中的第二件事，是进入一个嵌套循环,这个嵌套循环将数组中的，大学名字显示出来。

麻省理工公开课 - 计算机科学及编程导论课程节选

So if I print e to f of soccer, it will print the string football.

如果我要显示soccer的e到f变换的话，打印出来的就是football了。

麻省理工公开课 - 计算机科学及编程导论课程节选