In fact, this is one of the early symptoms of rickets.

其实，这正是佝偻病的早期症状之一。

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They also prevent certain diseases such as rickets and pellagra.

它们还防止某些疾病，如佝偻病和糙皮病。

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There is typical change with rickets in their blood and X ray.

血生化及X线片有典型佝偻病改变。

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Rickets is quite rare now.

佝偻病现在很少见了。

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Rickets are quite rare now.

现在佝偻病已很少见了。

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Rickets are quite rare now.

现在佝偻病已很少见了。

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