葡萄替代品价格的变动对葡萄的价格变动有明显的影响，但对葡萄的供给和需求影响不显著；
The price of substitute products has remarkable influence on grape price, but has no obvious influence on the supply and demand.
一些业内人士显然不想购买氟氯化碳替代品，因为后者的价格是氟氯化碳的5倍。
Some in the industry apparently do not want to pay for CFC substitutes, which can run five times the cost of CFC's.
去年，在一些地方，每公吨化肥的价格上涨了近50%，因此人类粪便也就成了一个有吸引力、通常也是必要的替代品。
With fertilizer prices jumping nearly 50% per metric ton over the last year in some places, human waste is an attractive, and often necessary, alternative.
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