丙酮酸

例句：

1. 1. The body uses pyruvic acid to produce energy.
   身体使用丙酮酸来产生能量。
2. 2. Pyruvic acid is a compound found in many fruits and vegetables.
   丙酮酸是一种存在于许多水果和蔬菜中的化合物。
3. 3. The body needs pyruvic acid for the proper functioning of its cells.
   身体需要丙酮酸来正常细胞的功能。