First, read the English article below.

Although vitamin D is important for your health, it’s not found in abundance in the foods we eat. As such, it’s not possible to get enough vitamin D through diet alone. Although you should look for food products for some of your vitamin D, supplements are an important part of your health regimen for this scarce nutrient source. Vitamin D supplements are found in two forms over-the-counter: vitamin D2 (ergocalciferol ) and vitamin D3 (cholecalciferol).  Vitamin D3 is the form that is found naturally in fish and produced by the body when it metabolizes sunlight. It’s also thought to be less toxic in large amounts than vitamin D2, though it’s the more powerful form and has more health benefits. Most experts recommend vitamin D3 supplements over D2 ones. Ask your health care professional for dosage and brand quality recommendations. Make sure you a magnesium supplement along with your vitamin D. Magnesium is necessary for the absorption of vitamin D, but is depleted by the process. Taking vitamin D without increasing magnesium intake can lead to a deficiency. Don't start taking supplements without first consulting with a doctor. Vitamin D3 is more complete, but it is derived from animal products. Vegans and vegetarians may wish to avoid it, despite its health benefits. Vitamin D2 supplements, on the other hand, are produced synthetically using mold, and do not involve animal products at all. Although vitamin D is scarce in our food sources, it is abundant in sunlight. However, you have to strike a delicate balance between not enough and too much sunshine: you don’t want to burn or over-expose your skin. To find this balance, you can spend 10 to 20 minutes in the sun twice a week, with sunscreen on only your face. Alternately, you can spend 2-3 minutes in the sun several times a week, still with sunscreen on only your face. Either way, make sure not to bathe for an hour after sun exposure.  Be careful not to overexpose your skin to UV rays in sunlight. UV radiation causes skin cancer, resulting in an estimated 1.5... 

Now, please write a short abstract for it in Chinese. Abstract:
服用维D补充剂。 素食主义者应选择维D2补充剂。 适当晒晒太阳，做好防晒。 晒太阳所产生的维D还会受一些因素的影响。 多吃富含维D的食物。 吃维D强化食品。 限制咖啡因摄入量。 综合使用以上方法。