steel-tired wheel

例句：

1. 1. The old car's tires were so worn out that they couldn't hold the weight of the vehicle anymore.
   这辆旧车轮胎磨损严重，无法承载车辆的重量了。
2. 2.The train was so tired that it could hardly move forward.
   火车太累了，几乎动不了了。
3. 3. The old bicycle had such weary wheels that it looked like it had been ridden many times.
   这辆旧自行车的轮子磨损得很厉害，看起来像是骑过很多次了。