body of axle

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. He replaced the old axle with a new one.
   他用一个新的替换了旧的轴。
3. 3. The car was so heavy that it couldn't turn around without breaking its axle.
   这辆车太重了，不转圈就会折断车轴。