Hypocycloid
n. [数]圆内旋轮线, 内摆线
🗣️ 情景例句
Tom doesn't have a steady girlfriend at the moment.
汤姆眼下还没有一个已确定关系的情侣。
Who has no haste in his business mountains to him seem valleys.
做事不急，履险如夷。
It is eight o'clock.The children go to school by car every day, but today, they are going to school on foot.
现在是8点钟。孩子们每天都乘小汽车去上学，而今天，他们正步行上学。