vitamin C

例句：

1. 1.Vitamin C is essential for good health.
   维生素C对健康至关重要。
2. 2. The orange juice contains a lot of vitamin C.
   橙汁含有大量的维生素C。
3. 3. She took vitamin C supplements to boost her immune system.
   她服用了维生素C补充剂来增强免疫系统。