n.知識分子；理論家

Jake didn't make very good grades in school, but his sister was a real egghead. 杰克在學(xué)校里成績平平，但他的姐姐很有學(xué)問。

I'm tired of listening to that egghead. 我厭煩聽那個書呆子講話。

Mr Reed is an egghead, he can't do anything. 里德先生是個書呆子,他什么事也做不了。