轮形的

例句：

1. 1. The car is round and has a smooth surface.
   这辆车是圆形的，表面光滑。
2. 2. The wheel is round and helps the car move forward.
   车轮是圆形的，帮助汽车前进。
3. 3. The circle is round and has no edges.
   这个圆没有边缘。