equidis-tant curve of curtate epicycloid

例句：

1. 1. The construction of the newbridge was curtate compared to theold one.
   新桥的建设与旧桥相比显得简陋。
2. 2. The artist's useof color in her painting is quite crude.
   这位艺术家在绘画中使用的颜色相当粗糙。
3. 3.The museum exhibits a collection of crudetools from prehistoric times.
   博物馆展示了一些史前时期的粗糙工具。