axle box body

例句：

1. 1. The car's axle broke on the highway.
   汽车在高速公路上车轴断了。
2. 2. The axle of the bicycle is the part that connects the wheels.
   自行车的轴是连接轮子的部分。
3. 3. The axle of the train was damaged during the accident.
   火车的轴在事故中受损了。