Ectoparasite
n. 外寄生物\\n[医] 外寄生物
🗣️ 情景例句
Maybe you can photogragh a class,
也许你来拍一次上课的情形，
How come?
怎么会这样？
Sally was very excited because she had never travelled on a train before.
萨莉非常激动，因为她从未乘过火车。