车轮

例句：

1. 1. The car has a large front wheel.
   这辆车有一个大前轮。
2. 2. The old bicycle had worn out its wheels.
   旧自行车的轮子已经磨损了。
3. 3. The train's wheels are turning smoothly on the track.
   火车的轮子在轨道上平稳地转动。