substitutes and complements 中文意思是什麼

substitutes and complements 解釋
替代品和補充品
  1. At low levels of real income, however, food, clothing, and shelter tend to be complements rather than substitutes.

    然而,在實際收入水平較低的情況下,食、穿、住都是互補的而不是可替代的。
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