hooked joint

例句：

1. 1. The doctor examined the patient's hooked joint and found it to be in good condition.
   医生检查了病人的关节，发现它状况良好。
2. 2. The scientist discovered a new way to connect two pieces of metal together using a hooked joint.
   科学家发现了一种使用钩状连接件将两块金属连接在一起的新方法。
3. 3. The old house has many hooked joints that need to be repaired.
   这所旧房子有许多需要修理的关节部位。