How do I do it? By putting in signs which are not other signs.

那怎么办呢？这就需要添加特殊的符号。

耶鲁公开课 - 文学理论导论课程节选

If I hear lots of buzzing out there, that means you're into it, so hum the piece a little bit to yourself, Musorgsky's "Great Gate of Kiev" Here and Pictures at an Exhibition and see if you can write down those particular symbols.

如果我听到了很多嗡嗡声,就说明你们都投入进去了,那就自己跟着曲子小声哼哼吧,穆索尔斯基的《基辅的城门》,以及《图画展览会》,看看你是否可以写下那些特殊符号来

耶鲁公开课 - 聆听音乐课程节选

X That's just the special symbol in C that says don't pass X, that is don't pass a copy of X. Rather figure out where x is in memory, where he is in that frame and provide swap the numeric address in RAM of that value so that swap can go do anything it wants at that address.

这在C中是一个特殊的符号，指明不传送，也不是传递X的拷贝，而是指出x在内存中哪个地方,它在那个框架中的哪个地方,提供给swap它的地址值,这样swap就可以使用那个地址中的数据。

哈佛公开课 - 计算机科学课程节选