求翻译：供不应求。是指一定时间内，市场上生产部门生产出的商品，也就是提供给人们消费的商品总额，小于(落后)人们在这段时间内满足物质资料生活所需要产品的总额。在这种情况下，需求大于供给，这时候市场就成了卖方市场，卖方处于有利的低位。是什么意思？

In short supply. Is within a certain time, the production department to produce the goods on the market, which is available to the total amount of consumed goods, less than the (backward) of material life during this period to meet the required total amount of the product. In this case, the demand i