joints of shoulder girdle

例句：

1. 1. The doctor examined the patient's joints carefully.
   医生仔细检查了病人的关节。
2. 2. Joints are where bones come together to form muscles and tendons.
   关节是骨头连接形成肌肉和肌腱的地方。
3. 3. The scientist discovered new ways to treat arthritis by studying human joints.
   科学家通过研究人类关节发现了治疗关节炎的新方法。