不恨此花飞尽,恨西园、落红难缀。晓还雨过,遗踪何在?一池萍碎。春色三分,二分尘土,一分流水。细看来不是杨花,点点是离人泪。霜蹄蹴踏长楸间,马官厮养森成列。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. |