dotwheel

例句：

1. 1. The dot wheel was a popular mode of transportation in the 19th century.
   点轮是一种在19世纪非常流行的交通工具。
2. 2. The dot wheel made it easy for people to move around the city without using cars.
   点轮使得人们无需使用汽车就能在城市中轻松移动。
3. 3. The dot wheel has been replaced by electric scooters and bicycles in many cities.
   在许多城市，点轮已经被电动滑板车和自行车所取代。