cogged joint

例句：

1. 1. The car'sengine is a cogged joint thatneeds to be replaced.
   这辆车的引擎是一个卡死的关节，需要更换。
2. 2. Theold clock had a cogged jointthat wouldn't turn.
   旧时钟有一个卡死的关节，无法转动。
3. 3. The workerused a screwdriver to remove the cogged joint and replace it with anew one.
   工人用螺丝刀拧下卡死的关节并用新的替换。