他染了头发，这在20世纪60年代是罕见的事。

He'd dyed his hair, which was almost unheard-of in the 1960s.

《牛津词典》

在那个时代的照片中，它们是罕见的。

They are rare among photographs of that age.

youdao

能表演这种灵活的杂技技艺的人是罕见的。

The people who perform this agile feat of acrobatics are rare.

youdao

Now, I know I'm answering your question I think in a better way, but it's actually very rare.

我想我现在已经很好的回答了你的问题,不过这种情实际上是非常罕见的

耶鲁公开课 - 心理学导论课程节选

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

"What a rare mood I'm in. " " "Why, it's almost like being in love."

一种罕见的感觉“,“这是为什么呢，就像恋爱中一样“

耶鲁公开课 - 心理学导论课程节选