Changes in the prices of one are not perfectly correlated with changes in the price of the other, so consumers can adjust their purchases to take advantage of relative discounts.
一种食品价格的变动并不一定会与另一种紧密关联，因此消费者们可以灵活调整采购的商品以利用相对折价。
This is what resulted in the premium on SHFE copper relative to LME prices. Arbitrageurs were eager to take advantage of the price differential.
这导致了上海期货交易所的铜价高于伦敦金属交易所的铜价。套利者迫切希望从这一价差中获利。
Third, the relative export price coefficient (negative) is also comparatively big, reflecting that China's export industry compete in the international market mainly by price advantage .
第三，中国出口的价格弹性也非常高。这就充分说明了我国出口企业在国际市场上主要依靠价格优势进行竞争。
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