drag link ball

例句：

1. 1.The engineer carefully placed the drag link ballinto the machine.
   工程师小心翼翼地将拖链球放入机器中。
2. 2. The team used thedrag link ball to move heavy equipment aroundthe factory.
   团队使用拖链球来移动工厂内的重型设备。
3. 3. Thenew design of the draglink ball has improved its durabilityand efficiency.
   新型拖链球的设计提高了其耐用性和效率。