A free-rider uses the public good without helping to create or support it.

VOA: special.2009.03.03

And of course, any political movement that tries to bring us together-- people together says--uses a family metaphor.

当然，任何政治行动,想把人们团结起来-,就会把人们称为一家人。

耶鲁公开课 - 心理学导论课程节选

Or as he puts it a little bit later whoever is entitled to participate in an office involving deliberation or decision-making is a citizen of the city. Listen to the words he uses there in describing a citizen.

或像他稍后提到的,任何具参与官职资格的人,包含商议或决策，就是城市的公民,注意他所使用的字眼,看他如何形容公民。

耶鲁公开课 - 政治哲学导论课程节选

He uses round,flat,Frisbee-like discs and a good snap of the wrist.

VOA: standard.2010.08.03

This is convention, so on almost-- and most any computer you overuse, if you're writing code that uses a char, you're gonna be handed 8 bits or 1 byte to store that particular char.

这是约定，对于大多数-,电脑，当你写代码要用到一个char型数据时,必须先预留8比特或1字节,的空间来存储这个char型数据。

哈佛公开课 - 计算机科学课程节选

A TSV file, tab-separated values uses the same thing but a tab character, if you wanna output an actual tab character, the result of hitting the tab key, \t you do use backslash T. That's so those kinds of files are made.

而TSV文件，“制表符分隔“文件,顾名思义，就是用制表符来分隔每一列，如果你想输出一个真正的制表符，点击tab键，你也可以用,这就是那些文件的形成方式。

哈佛公开课 - 计算机科学课程节选