把价格与需求量联系在一起的向右下方倾斜的曲线被称为需求曲线。
The demand curve is a graph of this relationship with the price on the vertical axis and the quantity demanded on the horizontal axis.
根据需求定理，随着一种商品价格的下降，需求量增加，因此，需求曲线向右下方倾斜。
According to the law of demand, as the price of a good falls, the quantity demanded rises. Therefore, the demand curve slopes downward.
根据需求定理，随着一种商品价格的下降，需求量增加，因此，需求曲线向右下方倾斜。
According to the law of demand, as the price of a good falls, the quantity demanded rises. Therefore, the demand curve slopes downward.
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