供给定律是，在其他因素不变的条件下，当价格上升时，供给量增加；
The law of supply is this: All else equal, as price rise, the quantity supplied rises;
一个最基本的假说是一种商品的价格越低，其需求量越大，若其他因素不变。
A basic economic hypothesis is that the lower the price of a commodity, the larger the quantity that will be demanded, other things being equal.
在在其他因素不变的情况下，短期利率的降低会减小贴现因子，从而引起资产价格(即未来的现金流入的现值)上升。
Other things being equal, a reduction in short-term interest rates should bump up asset values, because their stream of future earnings is discounted by a smaller factor.
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