classmate是一个可数名词，其复数形式为：classmates。
相关介绍：
classmate例句分享
It is really nice to have such a good classmate.
有这么好的同学真是太好了。
He turned around, and I recognized him as a former classmate.
他转过来，我才认出是位老同学。
He is my classmate and also my best friend.
他是我的.同班同学也是我最好的朋友。
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