名词
中文翻译：重油
同义词：
['heavy oil', 'heavy crude oil']
例句：
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1. The refinery processes a large amount of heavy oil daily.
炼油厂每天处理大量的重质油。
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2. He used to work in the oil industry and now runs his own company.
他以前在石油行业工作，现在经营着自己的公司。
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3. The heavy oil is used for heating and cooking.
重质油用于加热和烹饪。