pectoralis ['pektərəlɪs]

例句:

• The breast tissue is dissected posteriorly to the pectoralis muscle and fascia.
  将乳房组织向后剥离至胸肌和胸肌筋膜.
  
• Main chest muscle pectoralis major minor muscle and intercostal muscles.
  深层的肌肉较多,主要有骶棘肌.
  
• Look at my pectoralis major, much worse than you!
  看看我的胸大肌, 不比你差多少!