It is also not rare,she says, for the perpetrator to be an uncle, cousin or other family member.

VOA: standard.2010.06.29

They can do it on rare occasions, or they can do it whenever they feel like it, or they can do it regularly; it's often done quarterly.

他们可以偶尔为之,也可以在任何时间发放,或者定期发放,一般是一季一发

耶鲁公开课 - 金融市场课程节选

There's a kind of aspect of value for many of us where we feel that something's especially valuable if it won't endure, if it's fragile, or if it's rare.

对我们许多人来说，有一种价值的方面在于,如果某事物不是持续的，如果是易碎的,或者是稀有的，我们就觉得它特别有价值。

耶鲁公开课 - 死亡课程节选

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