名词
中文翻译：关节囊
同义词：
['joint cavity', 'joint space']
例句：
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1. The doctor performed a surgery to remove the tumor from the patient's synovial cavity.
医生为患者进行了手术，从其关节囊中取出了肿瘤。
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2. The patient was in pain due to an infection in his synovial cavity.
由于感染，患者感到疼痛。
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3. The surgeon removed the damaged bone fragments and cleaned out the synovial cavity.
外科医生移除了受损的骨碎片，清理了关节囊。