Oil traders and policymakers have criticised the benchmark US oil contract during the last year, after its price diverged sharply from other oil yardsticks. But a new study suggests that its main rival was also distorted.
美國西德克薩斯中質原油(WTI)價格與其它原油合約發生嚴重背離后，過去一年，石油交易員和政策制定者不斷批評這一基準的美國原油合約。但最新研究顯示，其他主要原油合約也遭到了扭曲。
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