名词
中文翻译：伸肌
同义词：
['extensor例句：1. The extensor muscles in the back are responsible for lifting the shoulders.（背部的伸肌负责抬起肩膀。）']
例句：
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1. The extensor muscles in the back are responsible for lifting the shoulders.
背部的伸肌负责抬起肩膀。
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2. The extensors of the fingers are responsible for extending the fingers.
手指的伸肌负责伸展手指。
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3.The extensors of the toes are responsible for extending the toes.
脚趾的伸肌负责伸展脚趾。