colecalciferol

例句：

1. 1.The leafy greens are rich in vitamin A and lutein.
   这些绿叶蔬菜富含维生素A和叶黄素。
2. 2.Lutein is a powerful antioxidant that can help protect against age-related vision problems.
   叶黄素是一种强大的抗氧化剂，可以帮助预防与年龄相关的视力问题。
3. 3.In the winter, many people take supplements containing lutein to improve their eyesight.
   冬天，许多人服用含有叶黄素的补充剂来改善视力。