countershaft cone

例句：

1. 1. The car's countershaft cone broke during the accident.
   事故中，汽车的倒车轴锥断了。
2. 2.The mechanic was able to replace the countershaft cone with a new one.
   机械师能够用一个新的倒车轴锥替换掉原来的那个。
3. 3. The engineer inspected the countershaft cone and confirmed its proper functioning.
   工程师检查了倒车轴锥，并确认其正常工作。