kreatine

例句：

1. 1. He took a supplement of creatine to improve his performance in the marathon.
   他服用了肌酸补充剂来提高他在马拉松比赛中的表现。
2. 2.The bodybuilders use creatine supplements to build muscle mass.
   健美运动员使用肌酸补充剂来增加肌肉质量。
3. 3.Creatine is an amino acid that helps the body produce energy during physical activity.
   肌酸是一种氨基酸，有助于身体在体力活动期间产生能量。