释义 |
vitamin D noun[ U ] uk /ˌvɪt.ə.mɪn ˈdiː/ us /ˌvaɪ.t̬ə.mɪn ˈdiː/ any of a group of vitamins, found in foods such as liver, some fish, and egg yolk, that are important for healthy bones and teeth维生素D SMART Vocabulary: related words and phrases Vitamins & minerals ascorbic acid B vitamin bioflavonoid biotin carotene folic acid multivitamin niacin Omega-3 retinol tocopherol vitamin vitamin A vitamin B1 vitamin B7 vitamin B complex vitamin C vitamin E vitamin H vitamin K
Although sun is a natural source of vitamin D, scientists think that 15–20 minutes of sun on our skin every day is enough to get healthy amounts of this essential vitamin. One doctor said that 80 percent of her patients do not get enough vitamin D. This is called vitamin D deficiency. People with vitamin D deficiency need to eat foods with vitamin D or take vitamin D pills. |