Chaetopod
n. [动]毛足动物(如蚯蚓、水蛭等)
🗣️ 情景例句
But I was lucky enough to have a career as a music teacher
但我很幸运， 有一个音乐教师的事业
Stop pretending.
别装了。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，