[] a message that is written down or printed on paper and usually put in an envelope and sent to sb信；函◆a letter of complaint投诉信◆Who is the letter addressed to?这封信寄给谁？◆You will be notified by letter.将用信函通知你。◆guidelines for writing effective sales letters (= to possible customers)撰写有效销售信函指南⨁to mail / post / send a letter寄信⨁to draft / write a letter起草一封信；写信⨁to get / open / receive a letter收到／打开／接到信⨁to acknowledge / answer / reply to a letter来函收悉；回信⨁a business / personal / formal / informal letter商务／个人／正式／非正式信函a written or printed sign representing a sound used in speech字母◆Your business card looks more impressive if you have letters after your name (= showing your qualifications).如果在名字后写上资历，你的名片看起来会更令人印象深刻。●the ˌletter of the ˈlawthe exact words of a law or rule rather than its general meaning法律（或法规）的准确字面意义◆Although the company sticks to the letter of the law, its employment practices are clearly unfair.尽管这家公司严守法律的字面意义，但实际执行雇用条例时显然是不公平的。●to the ˈletterexactly what sb/sth says, paying attention to every detail不折不扣；精确地；丝毫不差◆I followed your instructions to the letter.我已严格遵照你的指示办事。comfort letter commitment letter cover letter covering letter form letter