Wǒ / dà / xué / shí / xuǎn / xiū / le / gǔ / shēng / wù / xué / duì / kǒng / lóng / hěn / gǎn / xìng / qù

我大学时选修了古生物学，对恐龙很感兴趣。

I took a paleontology course in college and became very interested in dinosaurs.