她对幼儿特别有耐心。
由于在生命的最初两年期间仍然需要碘来促进脑发育，幼儿还特别面临危险。
Young children are also particularly at risk because the brain still needs iodine for its development during the first two years of life.
世卫组织还建议特别关注孕妇和幼儿预防问题。
WHO also recommends a special focus on preventing pregnant women and young children.
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