名词
中文翻译：关节
同义词：
['joint', 'junction', 'articulation']
例句：
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1.The doctor examined the patient's knuckle-joint and found no signs of injury.
医生检查了病人的关节，没有发现任何受伤的迹象。
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2.The scientist discovered a new way to fix knuckle-joints using stem cells.
科学家发现了一种使用干细胞修复关节的新方法。
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3. Knuckle-joints are prone to wear and tear, so it's important to take care of them.
关节容易磨损，所以要注意保养。