Epicycloid
n. [数]圆外旋轮线, 外摆线
🗣️ 情景例句
Could you tell me some more about...?
你能告诉我其它关于…的事吗？
He spends a lot of time reading books on ecology.
他花了大量的时间阅读生态学方面的书籍。
What's your name and address?
您的姓名和住址？