名词
中文翻译：胸大肌
同义词：
['pectoral muscle', 'pectoralis major']
例句：
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1.The first part of the musculus pectoralis is responsible for contracting the chest wall.
胸大肌的第一部分负责收缩胸壁。
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2. During exercise, the musculus pectoralis plays a crucial role in stabilizing the torso.
在运动中，胸大肌在稳定躯干方面起着至关重要的作用。
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3. The musculus pectoralis is an important muscle in the upper body, providing support and movement.
胸大肌是上肢的重要肌肉，提供支撑和运动。