universal joint body

例句：

1. 1. The universal joint is a crucial component of the human body's movement system.
   通用关节是人体运动系统的关键组成部分。
2. 2.The joint body is responsible for transmitting and receiving signals between nerves.
   关节体负责在神经之间传递和接收信号。
3. 3.The joint body is made up of cartilage, bone, and ligaments, which work together to allow smooth movement.
   关节体由软骨、骨头和韧带组成，它们共同工作以允许平滑的运动。