Vitamin D, or calciferol, is another fat soluble steroid vitamin which functions to stimulate calcium uptake from the gut and its deposition in bone.

维生素 D，或钙醇，是另一种脂溶性类固醇维生素，其功能是促进钙从肠道吸收并沉积在骨头中。

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Vitamin D, or calciferol, is another fat-soluble steroid vitamin that functions to stimulate calcium uptake from the gut and its deposition in bone.

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。

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The bone collagen plays the role of "the skeleton" in the bone, provides the carrier for the mineral (such as calcium, phosphorus) deposition.

骨胶原蛋白在骨中起到“骨架”作用，为钙、磷等矿物质的沉积提供载体。

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