名词
中文翻译：顶部原油同义词
同义词：
['top-crude oil', 'top-grade crudeoil']
例句：
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1. The refinery produces top-crude oil forexport.
该炼油厂生产出口的顶级原油。
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2. The company is known for itstop-grade crude oil.
该公司以其顶级原油而闻名。
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3. The top-crudeoil prices have been rising steadily since thebeginning of the year.
自年初以来，顶级原油价格一直在稳步上涨。