Trusted by over 1.6 million members since 2014 — why not join them?
There are 3 rules:
1. Suppose a door means a hinged, sliding, or revolving barrier at the entrance to a building, room, or vehicle, or in the framework of a cupboard.
2. Suppose a wheel means a circular object that revolves on an axle and is fixed below an object to enable it to move easily over the ground.
3. Only limited to physical entities.
I personally think there are more wheels just because of the sheer amount of vehicles in the world.
1. Suppose a door means a hinged, sliding, or revolving barrier at the entrance to a building, room, or vehicle, or in the framework of a cupboard.
2. Suppose a wheel means a circular object that revolves on an axle and is fixed below an object to enable it to move easily over the ground.
3. Only limited to physical entities.
I personally think there are more wheels just because of the sheer amount of vehicles in the world.
