2. 替代

　　例：But since few have marked down their own prices in line with the metal’s fall， they will be able to recoup much of the differences. Not so the producers， whose income is directly related to the fluctuating daily price on the London Metal Exchange.

　　但由于迄今没有几家公司按照金属价格的下跌程度来降低其价格，他们将能够获得差价的大部分收益。但是生产商家却不是这样，他们的收入与伦敦金属交易所的每月浮动价格直接相关。

　　这里so代替了to recoup much of the difference.