They joined the boy scouts,YMCA, other youth movements,benefited a great deal, supposedly from these experiences.

他们加入了童子军，基督教青年会，或其他的青年运动，获益良多，从这些经验可看出来。

哈佛公开课 - 幸福课课程节选

Now, you might in some context have to add the right kind of parentheses so that GCC or your compiler doesn't get confused, but really they just reverse each other's processes.

现在，你可能要在相应的地方,加入一些圆括号,这样GCC或编译器就不会误解你的意思，但是它们颠倒了相互的过程。

哈佛公开课 - 计算机科学课程节选