train wheel bridge foot

例句：

1. 1. The train wheels are made ofsteel and can carry heavy loads.
   火车轮是由钢制成的，可以承载重物。
2. 2. Thebridge foot is a crucial part of thebridge that supports the weight of the bridge.
   桥脚是桥梁中支撑桥梁重量的关键部分。
3. 3. The train wheels are designed to movethe train quickly and efficiently.
   火车轮的设计是为了使火车能够快速而有效地移动。