他因为总是带着课本去派对而被朋友们嘲笑为书呆子。

His friends teased him for being ___swotty because he always brought textbooks to parties.

整个周末都在图书馆学习，有点书呆子气，不是吗？

Spending the whole weekend in the library is a bit ___swotty, isn't it?