joint breaker

例句：

1. 1. This machine is designed to break down tough materials like steel and concrete.
   这台机器被设计用来破碎像钢铁和混凝土这样的硬材料。
2. 2. The joint breaker was used to remove the damaged part of the machine.
   关节破坏者被用来移除机器受损的部分。
3. 3. Joint breakers are often used in construction projects to ensure proper alignment of components.
   在建筑项目中，关节破坏者通常被用来确保部件的正确对齐。