As more calcium was needed for building bone and blood, the calcium content of my milk soared.

由于制造骨骼和血液需要更多钙质，我奶里的钙含量就猛然增加。

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At last the weight of bone ash and calcium content were measured.

最后进行灰重及骨钙含量的测定。

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As a whole, the calcium in diet of national people is not sufficient. The calcium mainly exists in bone, and the adequate calcium content is very important for healthy bone.

整体上看，我国居民膳食营养中钙的摄入量不足，而人体中钙主要存在于骨骼当中，其含量对于骨骼的健康十分重要，因此要合理适量的补钙。

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