maximum thickness of muscling

例句：

1. 1.The muscles in the arms are the largest and thickest part of the body.
   手臂上的肌肉是身体中最大的部分。
2. 2. The marathon runners have to train their muscles to be at their maximum thickness for the race.
   长跑运动员必须训练他们的肌肉以在比赛中达到最大厚度。
3. 3. The researcher found that the muscle tissue was thicker than expected, which could be due to genetic factors.
   研究人员发现肌肉组织比预期的要厚，这可能归因于遗传因素。