idiom
the law of supply and demand
一种经济理论,指出商品或服务的价格由商品的供应(供给)和需求决定
Meaning
an economic theory that states that the price of a good or service is determined by the availability of the product (supply) and the demand for it
Example
The **law of supply and demand** dictates that prices will rise if demand outstrips supply.
如果需求超过供给,**供求法则**表明价格将上涨。