rack wheel

例句：

1. 1.The car was so old that it needed to be replaced with a new rack wheel.
   这辆车太旧了，需要用新的车架轮来替换。
2. 2. The engineer carefully checked the condition of the rack wheel before starting the engine.
   工程师在启动发动机之前仔细检查了车架轮的状况。
3. 3.The team decided to replace the old rack wheel with a new one to improve performance.
   团队决定用一个新的车架轮来提高性能。