维生素A补充剂不过就一两美元，但是其效益——预防重大疾病，提高终生收入¬——极为可观，穷人们应该赶紧行动起来。
Vitamin A supplements cost just a dollar or two. Their benefits—preservation from fatal diseases, higher lifetime earnings—so massively outweigh the tiny costs that poor people ought to snap them up.
维生素A补充剂不过就一两美元，但是其效益——预防重大疾病，提高终生收入¬——极为可观，穷人们应该赶紧行动起来。
Vitamin A supplements cost just a dollar or two. Their benefits—preservation from fatal diseases, higher lifetime earnings—so massively outweigh the tiny costs that poor people ought to snap them up.
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