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伴随着年龄的增长,老年人对钙和维生素的需求逐渐增加,但许多人却无法获得足量的营养物质。
They need more calcium and vitamins with advancing age, and many do not get them.
youdao
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伴随着年龄的增长,老年人对钙和维生素的需求逐渐增加,但许多人却无法获得足量的营养物质。
They need more calcium and vitamins with advancing age, and many do not get them.
youdao