As yet little was known of the causes of the disease.

当时人们对这种疾病的起因几乎一无所知。

《牛津词典》

Little is known of the youngest son; it is presumed that he died young.

对于最小的儿子一般所知甚少，据推测他已经夭亡。

《牛津词典》

The embroidered designs were based on paper-cuts, the most well-known of them was from Bao Jun, a paper cutting master.

刺绣的设计以剪纸为基础，其中最为著名的是剪纸大师包钧的作品。

youdao

The best known of these is "Roll on Columbia."

VOA: special.2010.06.20

People who have never known of civil society; people who have never known of a world with polis, well, of course,they would do something stupid like that.

希腊人认为不知道文明社会的人,也不会知道城邦的世界,所以才会做出如此愚蠢的行为

耶鲁公开课 - 古希腊历史简介课程节选

So I had only known people of color. I only knew black people or Nigros as we called ourselves then or we are called.

所以，我所认识的人,就只有黑人而已,那时我们自称“黑鬼“,大家也都这么叫我们。

普林斯顿公开课 - 人性课程节选

In contrast, we have long known of the existence of fat tails in asset markets.

FORBES: Forget New Normal, Old Rules Are Alive And Well

If they had not known of the wounded-vet-turned-activist before, they knew his story now.

CNN: SHARE THIS

"Those in the basketball world have known of his abilities for a while, " Haden said.

NPR: USC Hires FGCU's Enfield As Men's Hoops Coach