deltoid

例句：

1. 1.The doctor examined the deltoid muscle to determine if it was injured.
   医生检查了肩部肌肉来确定是否受伤。
2. 2. He lifted the heavy box with his deltoid muscles.
   他用他的肩部肌肉抬起了这个重箱子。
3. 3. The patient was advised to exercise regularly to strengthen their deltoid muscles.
   病人被建议定期锻炼以增强他们的肩部肌肉。