富含钙质的干酪素对牛奶呈现白色起到一定作用。

Rich in calcium, Casein helps contribute to milk's white color.

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无脊椎类的好多物种有碳酸钙质的外壳或骨骼。

Many species of invertebrate have shells or skeletons made of calcium carbonate.

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最新研究表明，不仅摄入富含钙质的奶制品是有益的。

The latest study suggests that it's not just calcium-rich dairy that's beneficial.

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