The potential for less leverage — or borrowed money — at play in the oil-futures market has already helped spark a sharp fall in oil prices, which have lost about 20% of their value this month.
石油期货市场杠杆操作减少的前景已经拖累油价大幅下跌，本月油价已累计下跌约20%。
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His plan served as a sharp counterpoint to Republican lawmakers, who have insisted that tax increases should play no part in taming the nation's escalating national debt.