But thankfully now in 2010, we're at the point where there's a whole lot of free and open source software that you can integrate into your projects that other nice people have made available.

不过幸好在2010年,现在有很多可用的开源,代码软件，你可以将其融合,到你的工程中。

哈佛公开课 - 计算机科学课程节选

So that you get a good idea of what people do in their free time and what the dorms are like.

所以你可以了解人们闲暇时间做什么，宿舍什么样。

沟通很重要 - SpeakingMax英语口语达人

None of you got smallpox vaccinations, because once a country was certified to be smallpox free, there was no reason to-- there was no reason to vaccinate people any longer.

你们当中没人接种过天花疫苗,因为一旦一个国家确认不再有天花,就没有理由,就没有理由再给人们接种

耶鲁公开课 - 生物医学工程探索课程节选

Aristotle went on to say that the justice needed to control this dark side of human nature can be found only in a well ordered society of free people who govern themselves, and the only one that he knew was the Polis of the Greeks.

亚里士多德还说过,正义需要用来,控制人性的丑恶面,只有在公民自治的秩序井然的,社会里才能找得到正义,他所知道的这样的社会就是希腊城邦

耶鲁公开课 - 古希腊历史简介课程节选

So, what starts out as a seemingly benign state of nature where everyone is free and yet where there is a law and the law respects people's rights, and those rights are so powerful that they're unalienable.

乍一看自然状态是十分良善的,人人皆自由，但还有自然法,自然法尊重人们的权利，而这些权利是如此强大，它们是不可剥夺的。

耶鲁公开课 - 公正课程节选

So within a couple of generations people could move up from being the lowest slaves to two generations of being free Roman citizens.

所以几代以内,奴隶能从最低社会等级,上升两位，成为自由的罗马公民。

耶鲁公开课 - 新约课程节选

You just go, just a free kick and people get mad at you. So what?

你只要往前，只是判罚任意球。人们会因你而抓狂的，那又怎样呢？

在公园碰到的母子 - SpeakingMax英语口语达人