speedometer flexible shaft

例句：

1. 1.The car has a flexible shaft that allowsit to turn easily.
   这辆车有一个灵活的轴，可以轻松转动。
2. 2. Themachine uses a flexible shaftto move its parts.
   这台机器使用一个灵活的轴来移动其部件。
3. 3. The engineer designed the flexibleshaft to reduce friction and improve efficiency.
   工程师设计了灵活的轴以减少摩擦并提高效率。