Beta carotene is only one of more than 500members of the carotenoid family.
Beta carotene is only one of more than 500members of the carotenoid family.
β-胡萝卜素在500多个成员的类胡萝卜素属中，只是其中一员。
Beta carotene is only one of more than 500members of the carotenoid family.
β-胡萝卜素在500多个成员的类胡萝卜素属中，只是其中一员。