As we age, our skin becomes less effective at converting sunlight to vitamin D.
随着我们年龄的变老，我们的皮肤在转换阳光到维他命d的能力也越来越弱。
Vitamin D, the so-called sunshine vitamin because it’s made when sunlight gets your skin.
维生素D，它是当阳光晒到皮肤时生成的，所以叫做阳光维生素。
Vitamin D is also synthesised by the skin when exposed to sunlight.
维生素D也是合成的皮肤暴露在阳光下。
The skin manufactures vitamin D in response to ultraviolet light exposure.
皮肤暴露于紫外线可生成维生素D。
The skin manufactures vitamin D in response to ultraviolet light exposure.
皮肤暴露于紫外线可生成维生素D。
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