[] () things that affect the price of a product or service or the quantity in which it is produced or sold, for example the amount of raw materials available or the number of customers市场力量◆Market forces have driven down the price of salmon.市场力量压低了鲑鱼的价格。◆We believe that foreign exchange rates should be left to market forces (= rather than influenced by governments).我们认为外汇汇率应当由市场决定（而不应受政府影响）。