名词
中文翻译：胸大肌
同义词：
['chest muscle', 'pectoralmuscle']
例句：
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1. The tragal muscle is responsible for supporting the breastbone during breathing.
胸大肌负责在呼吸时支撑肋骨。
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2. During exercise, thetragal muscle becomes more active to helpwith movement.
运动时，胸大肌变得更加活跃以帮助移动。
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3. Athletes often workon strengthening their tragalmuscles to improve performance.
运动员经常努力加强胸大肌以提高表现。