So Roman slavery and the freedom of that was actually one way that a few people in the Ancient World recognized some kind of social mobility, which was very rare in the Roman Empire.

所以罗马奴隶制以及奴隶释放制,被古代部分人认为是,某种社会阶级流动，在罗马帝国很少见。

耶鲁公开课 - 新约课程节选

It's like rare, so everybody always go to the beach.

这么晴朗的日子不多见，每个人都会想去海边。

强力推荐 - SpeakingMax英语口语达人

So, if you by chance, I know it's very rare, but if by chance you don't get the class you can always follow up later.

如果你们偶然，我知道不太可能，但是如果不小心你们错过了某节课,你们就可以在之后补回来了。

麻省理工公开课 - 固态化学导论课程节选

So, it's pretty rare that chemistry makes the every day news.

通常化学不太会出现在日常生活新闻里。

麻省理工公开课 - 化学原理课程节选

But if we look at the society that emerges, this Dark Age society that emerges from the ancient world of Mycenae, what you have is a rare human experience.

如果我们仔细观察这渐渐浮出水面的社会,这个从古代迈锡尼文明浮现出来的,黑暗时代的社会,你会得到一些相当宝贵的经验

耶鲁公开课 - 古希腊历史简介课程节选

But that is a terrible mistake because we should know that sculptresses are very rare; very few people have the job of a sculptress or sculptor, so it's a mistake.

但这是严重错误,我们都很清楚,雕刻家是很罕见的职业,只有很少人会是雕刻家,所以这是错的

耶鲁公开课 - 金融市场课程节选

And, in a rare moment of sort of personal self-reflection or self-reference, he notes somewhat drolly that the novelty of his ideas will make it difficult for them to find an audience.

虽然他很少对自己的思想,进行自我反思或自我参照，但他还是自嘲地写道,那些新奇的思想会让它们,很难找到读者。

耶鲁公开课 - 政治哲学导论课程节选

One reason it's been harder to identify stem cells is that they're so rare; the other reason is that it's hard to identify the characteristics of them and it's taken many years to work this out.

干细胞难以识别的原因之一是,这些细胞很少,另一个原因就是,干细胞的特征性蛋白难以识别,我们花了好多年去解决这个问题

耶鲁公开课 - 生物医学工程探索课程节选

It has the feeling of a rare moment of explanation from Haze.

这个时候我们少有地,感到了来自Haze的解释。

耶鲁公开课 - 1945年后的美国小说课程节选

You will find very rare of the case of a Greek city, which is founded away from the sea; they always wanted to be close to the sea for varieties of reasons.

你会发现希腊城市中很少见的现象,那就是它们远离大海,诸多的原因致使希腊人,愿意把城市建设在离海近的地方

耶鲁公开课 - 古希腊历史简介课程节选

You have a full monarchy in the sense that both-- we in America talk about the separation of church and state, that is a very rare and unusual thing in the history of the world.

他有一个完全政教合一的君主政权,在美国政教是分离的,这在世界历史上很少见

耶鲁公开课 - 古希腊历史简介课程节选

Now, in the process of doing that they found some very rare stem cells that are called pluripotent, pluri just means many potencies.

如今在这种研究进行的过程中,他们发现了一些非常稀少的干细胞,称为多能干细胞,pluri这个前缀就是指很多能力

耶鲁公开课 - 生物医学工程探索课程节选