例句與造句

1. Carotenoids such as beta-carotene, lycopene, lutein and beta-cryptoxanthine are produced in plants and certain bacteria, algae and fungi, where they function as accessory photosynthetic pigments and as scavengers of oxygen radicals for photoprotection.
2. It's difficult to find cryptoxanthine in a sentence. 用cryptoxanthine造句挺難的