短語詞組短語electronic mail document system 公務(wù)電子郵件系統(tǒng)Mail Delivery System 郵件傳送系統(tǒng);郵件傳遞系統(tǒng);送系統(tǒng)mail e system 電子郵件系統(tǒng)mail Network system 電子郵件系統(tǒng)international mail transportation system 國際郵件運輸組織mail accounting system 郵件計費系統(tǒng)Voice Mail Paging System 語音自動廻答a mail informing system 郵件通知系統(tǒng) 返回 mail system