名詞 classmate:

1. an acquaintance that you go to school with
   同義詞：schoolmate, schoolfellow, class fellow

1. Even though I hadn't seen my classmate for many years, I recognized him immediately.
   即使多年沒有看見我的同學，我也馬上認出了他。
2. I will see to the sick classmate.
   我會照顧那個生病的同學。
3. His brother is my classmate.
   他哥哥是我的同學。
4. My classmate borrowed my rubber and forgot to return it.
   我的同學借了我的橡皮忘了還。
5. Be those your classmate?
   那些是你的同班同學嗎？

class.mate

n.（名詞）
A member of the same class at school.
同班同學：學校里屬同一個班級的成員