肌氨酸

例句：

1. 1. The body needs a lot of amino acids to function properly.
   身体需要大量的氨基酸来正常运作。
2. 2. Creatine is often used as a performance enhancer for athletes.
   肌酸常被运动员用作性能增强剂。
3. 3. The supplement contains 10 grams of creatine per serving, which can help improve muscle strength.
   该补充剂每份含10克肌酸，可以帮助提高肌肉强度。