这样做是为了避免模式处理程序为判断元素类型而猜测属性类型的情况。

This was done to avoid a situation where a schema processor would need to somehow guess the types of the attributes in order to determine the type of the element.

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为了避免这种情况，如果你决定注射疫苗的话，一定确保你保留这你的孩子过去注射过的所有疫苗的详细记录，以及何时注射—而不要依赖于你的医生的办公室为你这样做。

To avoid this, if you do decide to vaccinate, be sure you keep a detailed record of which vaccinations your child has received, and when - do not rely on your doctor's office to do that for you.

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