懒惰不仅仅是度假、放纵或恶习；它对于大脑就像维生素 D 对身体一样不可或缺。
Idleness is not just a vacation, an indulgence or a vice; it is as indispensable to the brain as Vitamin D is to the body.
关于维生素 D，最好的例子是鱼、蘑菇和鸡蛋，而维生素 E 则是坚果和种子。
For Vitamin D, the best examples are fish, mushrooms and eggs and for vitamin E, nuts and seeds.
维生素 D，或钙醇，是另一种脂溶性类固醇维生素，其功能是促进肠道吸收钙并强化骨骼。
Vitamin D, or calciferol, is another fat-soluble steroid vitamin that functions to stimulate calcium uptake from the gut and its deposition in bone.
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