英语词汇“national bulk mail system”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	national bulk mail system
释义	National Bulk Mail System National Bulk Mail System The system of 21 centers in the United States where extremely large volumes of mail are processed and distributed to the appropriate destinations. Bulk mail centers are highly automated.
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National Bulk Mail System