名词
中文翻译：三关节
同义词：
['three-jointed', 'three-joining']
例句：
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1.The scientist discovered a triple joint in the animal's leg.
科学家在动物的腿中发现了一个三关节。
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2. The robotic arm has a triple joint that allows it to move in three dimensions.
这个机器人手臂有一个三关节，可以三维移动。
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3. The dancer performed a triple joint routine on stage.
舞者在舞台上表演了一个三关节动作组合。