They are letterhead, reference and date, inside address, salutation, body, complimentary close, and signature.

它们包括信头、参考编号和日期、封内标址、称呼、正文、结为谦称和签名。

youdao

They are letterhead, reference and date, inside address, salutation, body, complimentary close, and signature.

它们包括信头、参考编号和日期、封内标址、称呼、正文、结为谦称和签名。

youdao