owlish

1. ADJ An owlish person looks like an owl, especially because they wear glasses, and seems to be very serious and smart. 猫头鹰般的; 聪明而严肃的[usu ADJ n]

With his owlish face, it is easy to understand why he was called "The Professor."

看看他那猫头鹰般的脸庞，就不难理解为什么他被称为“教授”了。