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英语翻译The term oil field is also used as a shorthand to refer

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英语翻译
The term oil field is also used as a shorthand to refer to the entire petroleum industry,however,it is more accurate to divide the oil industry into three sectors:upstream (crude production from wells and separation of water from oil),midstream (pipeline and tanker transport of crude) and downstream (refining and marketing of refined products).
英语翻译The term oil field is also used as a shorthand to refer
这个挺简单的:
保证质量:
该术语油田(行业)也被用作整个石油工业的简写,不过,把石油工业划分为三个部门更为确切:上游部门(油井中的原油生产以及把水从油中分离出来(分离水和油)),中游部门(原油管道和油轮运输),以及下游部门(成品油的精炼和销售)
再问: 我觉得有点问题,能把第一句话好好翻译一下吗(however前句)?
再答: 该术语“油田(行业)”也被用作整个石油工业的简写--这个没有问题啊。