ig·no·rance /ˈɪɡnərəns/ n. 1. 无知;愚昧 Some species have been wiped out through ignorance. 有些物种由于人们的无知而灭绝了。 Ignorance is a rare blessing. 难得糊涂。 2. 不知(of, about) keep sb. in ignorance of sth. 不让某人知道某事 profess ignorance about sth. 自称对某事一无所知 3. [the I-]蒙昧时代(指阿拉伯历史上穆罕默德传播伊斯兰教以前的时期;全称the time of ignorance)