Oil companies' profitability fell last year in spite of the sharp rise in oil prices, highlighting their vulnerability to a downturn, an authoritative industry study has found.
一项权威的行业调查发现,尽管油价大幅上涨,石油公司去年的盈利能力仍出现下降,这突显了它们在面临manbetx20客户端下载 衰退时的脆弱性。
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