lipoic acid

例句：

1. 1. Lipoic acid is an antioxidant that helps protect cells from damage.
   抗坏血酸是一种抗氧化剂，有助于保护细胞免受损害。
2. 2. The supplement contains high levels of lipoic acid, which may help improve skin health.
   这种补充剂含有高浓度的抗坏血酸，可能有助于改善皮肤健康。
3. 3. In some cases, doctors recommend taking lipoic acid supplements to boost the body's immune system.
   在某些情况下，医生建议服用抗坏血酸补充剂来增强身体的免疫系统。