synovial joints

例句：

1. 1. The doctor examined the patient's synovial joints carefully.
   医生仔细检查了患者的关节。
2. 2.The scientist discovered a new way to treat rheumatoid arthritis.
   科学家发现了一种新的治疗风湿性关节炎的方法。
3. 3.The athletes performed their synovial joints with precision.
   运动员们以精确的动作展示了他们的关节。