名词
中文翻译：Unknown
同义词：
['pectoralis', 'pectoralis muscle', 'pectoralis group']
例句：
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1. The pectoralis muscle is responsible for the movement of the upper arms.
胸大肌负责上臂的运动。
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2. The pectoralis muscle is a crucial part of the human body.
胸大肌是人类身体的重要组成部分。
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3. The pectoralis muscle is often referred to as the "big breast" muscle.
胸大肌常被称为“大胸肌”。