动关节的

例句：

1. 1. The human body has over 300 joints that allow us to move in various ways.
   人体有超过300个关节，使我们能够以多种方式移动。
2. 2. The scientist discovered a new way to join the two pieces of metal together.
   科学家发现了一种将两块金属连接在一起的新方法。
3. 3. The dancer's movements were precise and coordinated, demonstrating the importance of joint health.
   舞者的舞蹈动作精准且协调，展示了关节健康的重要性。