哪位英语达人帮忙翻译此句,有谁试试，不要机器翻译啊

1. A rise in commodity prices, consumers will opt for cheaper substitutes, resulting in reduced demand for commodities.
2. A rise in commodity prices, but consumers continue to buy this product, as consumer income has not increased, the total consumption dropped.

这是经济学最基本的原理，在很多注明的经济学教材中都有的，曼昆的经济学原理就有。

某种商品
a/one certain good/product最为常见的说法
替代品
substitute(s)

1. When the price of a certain good rises, consumers would choose substitutes for cheaper prices. Therefore, the demand of the product will decline.
2. When the price of a certain good rises, consumers continue to purchase this product. As the consumers' income has not increased, the total quantity of the good declines.

1.某商品价格上升时，消费者会选择较便宜的替代品，从而导致商品需求下降。
When the price of a certain commodity goes up, consumers would chose a cheaper replacement, which leads to the decreasing demand of this commodity.
2.某商品价格上升，但是消费者继续购买此商品，由于消费者的收入没有增加，消费总量下降了。
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