Epicycloids
(epicycloid 的复数) n.[数]圆外旋轮线, 外摆线
🗣️ 情景例句
I realize that pPeter wants you to marry him this summer.
我知道彼德想要你今年夏天和他结婚。
See you later!
到时候见啦！
Oh, sorry!
喔，对不起。