The number of transactions involving oil futures on the New York Mercantile Exchange (NYMEX), the biggest market for oil, has almost tripled since 2004.
2004年以来,最大的石油市场,纽约商品交易所的石油期货交易增长了两倍。
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The most actively traded copper futures contracts on the Shanghai futuresExchangefor delivery in May have surged an aggregate of 17 percent to 69, 220 yuan per ton since late January.