The distribution of multivitamin tablets to the entire population may be useful to prevent some deficiencies but is expensive, labor intensive, and not effective for all deficiencies.

• 向全体人群分发含多种维生素的药片可能对防止一些缺乏是有用的，但非常昂贵且劳动强度大，并且不是对所有的缺乏症都有效。