At that time I was ignorant of events going on elsewhere.
那时我并不了解其他地方发生的事情。
Never make your students feel ignorant.
千万别让你的`学生感到自己一无所知。
He's ignorant about modern technology.
他对现代科技一无所知。
People don't like to ask questions for fear of appearing ignorant
人们不喜欢问问题，害怕自己会显得很无知。
I met some very ignorant people who called me all kinds of names.
我碰到了一些非常粗鲁的家伙，他们用各种脏话骂我。