Epicycloid
n. [数]圆外旋轮线, 外摆线
🗣️ 情景例句
Thanks ... for what?
谢什么？
No, I can't go to bed till she says Good night to me.
不，除非她向我道晚安，不然我睡不着。
It is only someone looking on from outside that can inject the dangerous thoughts.
只有外部的旁观者才能灌输危险的思想。