多情自古伤离别,更那堪、冷落清秋节!今宵酒醒何处?杨柳岸、晓风残月。此去经年,应是良辰好景虚设。便纵有千种风情,更与何人说?沙平水息声影绝,一杯相属君当歌。When the demand for something is greater than its supply, producers and suppliers will sense the possibility of making a profit - the excess of revenues over expenses is the profit. |