n. 书呆子, 蛀书虫

Bookworm \Book"worm`\, n.
1. (Zo["o]l.) Any larva of a beetle or moth, which is
injurious to books. Many species are known.

2. A student closely attached to books or addicted to study;
a reader without appreciation.

I wanted but a black gown and a salary to be as mere
a bookworm as any there. --Pope.