1.  letter
2.  mail transfer
3.  correspondence

• 1. 信函: letter | Letters and mail | epistulae | correspondence
• 2. 正式信函: Formal letters | Business letters
• 3. 非正式信函: Informal letters

更多释义

• 1.一切信函都将由本人亲自答复。
  All letters will be answered personally.
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• 2.所有抽屉里都放满了信函文件。
  All the drawers were stuffed full of letters and papers.
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• 3.她惶恐地望着桌子上堆积如山的信函。
  She looked in horror at the mounting pile of letters on her desk.
  dict.yoduao.com

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