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20世纪初至30年代末起,美国以外地区的石油消费稳步增长,所有重要的国际性大石油公司已经成立,石油工业进入第二个历史发展阶段。
From the early 20th century to the late 1930s, oil consumption outside the United States grew steadily. All major international oil major companies have been established and the oil industry entered the second stage of historical development.