If the company produces less of a product than the public wants, the law of supply and demand says that the company can charge more for the product.如果公司生产的产品少于市场需求,按照供求法则公司就可以给产品加价。They buy paintings at auctions, mark them up, and then resell them at a vast profit to collectors.他们在拍卖会上购买画作,再加价转手卖给收藏家,赚取高额利润。We'd almost signed the contract when the other guys moved the goalposts and said they wanted more money.我们几乎就要签合同了,可就在这时对方那些家伙又出了难题,说他们得加价。