貴函
Your letter; Your favour; your esteemed letter; Your esteemed favour; Your valued letter; Your valued favour; Your note; Your communication; Your greatly esteemed letter; Your very friendly note; Your friendly advice; Yours.
前函
The last letter; The last mail; The last post; the last communication; The last respects(自己的信); The last favour(來信).
本信，本函
Our (my) letter; Our (my) respects; Ours (mine); This letter; these lines; The present.
次函
The next letter; The next mail; The next communication; The letter following; the following.
貴函發出日期
Your letter of (the) 5th May; Your favour dated (the) 5th June; Yours of the 3rd July; Yours under date (of) the 5th July; Your letter bearing date 5th July; Your favour of even date(AE); Your letter of yesterday; Your favour of yesterday's date; Your letter dated yesterday.
貴方來電、電傳及傳真
Your telegram; Your wire; Your cablegram(從國外); Your coded wire(密碼電報); Your code message; Your cipher telegram; Your wireless telegram; Your TELEX; Your Fax.
貴方電話
Your telephone message; Your phone message; Your telephonic communication; Your telephone call; Your ring.
通知
(Noun)
Advice; Notice; Information; Notification; Communication; A report; News; Intelligence; Message.
(Verb)(通知，告知)
To communicate (a fact) to; To report (a fact) ; To apprise (a person) of; To let (a person) know; To acquaint (a person) with; To intimate (a fact) to; To send word; to send a message; To mail a notice; to write (a person) information; To give notice(預告); To break a news to(通知壞消息); To announce(宣佈).
回信
(Noun)
An answer; A reply; A response.
(Verb)
To answer; To reply; To give a reply; To give one's answer; To make an answer; To send an answer; To write in reply; To answer one's letter.
(特此回信)
Reply to; Answering to; In answer to; In reply to; In response to.
(等候回信)
To await an answer; To wait for an answer.
(收到回信)
To get an answer; To favour one with an answer; To get a letter answered.
收訖，收到
(Noun)
Receipt(收到); A receipt(收據); A receiver(領取人，取款人); A recipient(收款人)
(Verb)
To receive; To be in receipt of; To be to (at) hand; To come to hand; To be in possesion of; To be favoured with; To get; To have; To have before (a person); To make out a receipt(開出收據); To acknowledge receipt(告知收訖).
確認
To confirm; Confirming; Confirmation; In Confirmation of(爲確認……，爲證實……); A letter of confirmation(確認函或確認書)
隨函附件
Enclose; Inclose.
高興，愉快，欣慰
To have the pleasure to do; To have the pleasure of doing; To have pleasure to do; to have pleasure in (of) doing; To take (a) pleasure in doing (something); To take pleasure in doing (something); To be pleased to (with)(by); to be delighted at (in)(with); To be glad to (of)(about); To be rejoiced in (at).
迅速，立刻
Urgently; Promptly; Immediately; With all speed; At once; With dispatch; With all despatch; With the quickest possible despatch; With the least possible delay; As soon as possible; As quickly as possible; As promptly as possible; At one's earliest convenience; At the earliest possible moment; At an early date; Without delay; Without loss of time; Immediately on receipt of this letter; By express messenger; By Special messenger; By special delivery; By express letter.
依照
According to; Agreeably to; Conformably to; pursuant to; In accordance with; In conformity with (to); In obedience to; In deference to; In compliance with; In agreement with; In pursuance of.
就……，關於
About; Regarding; Concerning; As to; As regards; With regard to; In regard to;(of); Respecting; Relative to; Anent; In connection with; Referring to; With reference to; In reference to; Re.
期滿到期及應付之款
To be due; To fall due (become) due(日期將到); Duly(正時，及時); In due Course (依照順序).
每個，按照，透過
Per(=by, through) rail.(post,mail,steamer)(透過鐵路，郵政，輪船)
Per pro.= by proxy (由代理)
Per annum (=yearly，每年)
Per mensem (=monthly,每月)