Right now it's got that second key word there called pass, which is just Python's way of saying there's an empty body in here.

现在我在完善它的一个简单部分,但是首先，类是用来干什么的呢？,把类认为是可以创建一个。

麻省理工公开课 - 计算机科学及编程导论课程节选

Frankly, I would argue that probably 80%, 90% of the users of Boston Subway just want to buy one damn ticket to get on the subway and yet where is the button that says one-way pass?

坦白讲，我想提出，可能80%，90%的波士顿地铁用户,只想买一张TM的地铁票,来乘坐地铁，但是哪里有一个按钮,指明：“一路通“？

哈佛公开课 - 计算机科学课程节选

This was the special value that said to the computer string stops here and because you have that barrier given to you at the end of every string, just the most efficient way you can pass strings around is just by passing the address of their very first bytes, the location in RAM.

这是一个特殊的值，表示的是,字符串在这里结束，因为在每个字符串的末尾,都有那个关卡，这是一个最有效率的方式，你可以通过传递,字符串的第一个字节的地址来传递一个字符串，地址是在RAM中的。

哈佛公开课 - 计算机科学课程节选