Oncomelania nosophora
[医] 片山钉螺
🧩 词语组成解析
[医] 钉螺属
🗣️ 情景例句
I have worked hard at my major subject.
我对主修课特别用功。
I mean it.
我不是开玩笑的。
I haven't told you that my family made a lot of money in the nineteenth century by making children work 16 hours a day in their factories.
我还没有告诉过你，我的家在19世纪的时候赚了一大笔钱，是强迫儿童在工厂里一天劳动16个小时赚来的。