But there is a serious danger from the flood of unskilled, ignorant foreign labor.

VOA: special.2010.05.20

It's an invention of a barbarous age which a blind and ignorant population will accept only to its own vexation, hindrance, and constraint.

它是只有蛮荒时代愚昧无知的人们才会接受,以自寻烦恼，阻碍，和限制的。

耶鲁公开课 - 弥尔顿课程节选

And so, I have a film clip here of two very nice studies showing babies' ignorant--sorry, young children's ignorance of other people.

我给大家放两个优秀实验的电影片段,这个影片表明了幼儿对他人的无知

耶鲁公开课 - 心理学导论课程节选