除了商品期货合约，大多数衍生品交易在中国都是被禁止的。

Apart from commodity futures contracts, most derivatives are banned in China.

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许多产油国都认为美国应当采取措施加强对石油期货市场的监管，但会议在这方面没有取得明显进展。

The gathering made no clear headway on whether the U. S. should take steps to tighten regulations on the oil-futures trading market, as many oil producers think it should.

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