arbuscle

例句：

1. 1.The athlete's performance was excellent, but his arm muscles were sore from the intense workout.
   这位运动员的表现非常出色，但是他的手臂肌肉因为激烈的训练而酸痛。
2. 2. The scientist used a microscope to examine the tiny muscle fibers in the sample.
   科学家使用显微镜检查样本中的微小肌肉纤维。
3. 3. The doctor advised the patient to exercise regularly to strengthen their arm muscles.
   医生建议病人定期锻炼来加强他们的手臂肌肉。