曲线笔

例句：

1. 1. The car drove along the curve of the road.
   汽车沿着道路的弯道行驶。
2. 2. The artist painted a beautiful curve on the canvas.
   艺术家在画布上画了一条美丽的曲线。
3. 3. The ship sailed smoothly around the curve of the bay.
   船在湾的曲线处航行得非常平稳。