美国瓦莱罗能源公司在短短时间里迅速崛起，一举成为北美最大的炼油生产商。
American Valero Energy Corp. rose rapidly in a short period and became North America 's largest refining manufacturer.
美国瓦莱罗能源公司在短短时间里迅速崛起，一举成为北美最大的炼油生产商。
American Valero Energy Corp. rose rapidly in a short period and became North America 's largest refining manufacturer.
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