名词
中文翻译：维生素
同义词：
['calcium', 'vitamin D3', 'calciferol']
例句：
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1. Vitamin D is essential for bone health and can be obtained through sunlight or supplements.
维生素D对于骨骼健康至关重要，可以通过阳光或补充剂获得。
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2. The elderly often need more calcium to maintain their bones.
老年人需要更多的钙来保持他们的骨骼。
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3. The doctor prescribed a supplement containing vitamin D for my mother's osteoporosistreatment.
医生为我妈妈的骨质疏松症治疗开了一种含有维生素D的补充剂。