英语词汇“upstream operations”的意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	upstream operations
释义	upstream operations 汉语翻译【经】上游作业
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英语词典包含435040条英汉在线翻译词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

upstream operations