Lutein is dihydroxy - carotenoids with the ionone ring systems distributed widely in nature.叶黄素是含紫罗酮环的二 羟基 类胡萝卜素,在自然界广泛存在.Lutein and zeaxanthin are both dihydroxy - carotenoids with the ionone ring systems distributed wi...
Each generation surpasses the preceding one.一代更比一代强.Her beauty surpasses all description.她的美丽超出了人力所能描绘的限度.The scenery here surpasses that of the lower reaches of the Changjiang River.此处风光赛过江南....