sir

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++sir /sə; strong sɜː $ sər strong sɜːr/ ●●● S1 W3 noun  1  spokenTALK TO somebodyNAME OF A PERSON used when speaking to a man in order to be polite or show respect 先生，长官〔对男子的敬称〕 ‘Report back to me in an hour, sergeant.’ ‘Yes, sir.’ “一小时后向我报告，中士。”“是，长官。” Can I help you, sir? 我能为您效劳吗，先生？ Sir! You dropped your wallet. 先生！ 您的钱包掉了。 → madam(1), ma'am2. Dear Sir/Sirs TCMused at the beginning of a formal letter to a man or to people you do not know 敬启者〔对男子或不知其名者的称呼，用于正式信函的开头〕n3. → Sir4  British English spokenTALK TO somebodyTEACH used by children at school when speaking to or talking about a male teacher 老师〔中小学生对男教师的直接或间接称呼〕 Sir, I’ve forgotten my homework. 老师，我忘记做家庭作业了。 Look out – sir’s coming back! 注意——老师回来了！ → miss2(4)5  no/yes sir!  (also no/yes siree! especially American English) old-fashioned spokenNO used to emphasize a statement or an answer to a question 绝不！/的确！〔用于强调所说的话或对问题的回答〕 I will not have that man in my home, no sir! 我不要那个人待在我家里，绝对不行！

Examples from the Corpus

sir• Anagrams and word puzzles are not in my line of country, sir.• Dear Sir or Madam..• Not esquire, sir, lord or anything like that.• The bodies are here, sir.• Would you need to speak to him, sir?• You needn't be jealous, sir.• Excuse me, sir. Is this your jacket?• It isn't all it sounds, sir, but they tell me it's a start.• "Are you on duty tonight, Corporal?" "Yes, sir."nSirNAME OF A PERSONHIGH POSITION OR RANKa title used before the first name of a knight or baronet 爵士〔冠于爵士或准男爵名字之前的尊称〕 Sir Paul McCartney 保罗·麦卡特尼爵士 Sir Jasper 贾斯珀爵士

Examples from the Corpus

Sir• Sir James WilsonOrigin sir (1200-1300) → SIRE1

sir nounSirLDOCE OnlineChinese  

speaking when to used Corpus a to order man in

sir
sir S1 W3 /sə; strong sɜː $ sər strong sɜːr/ noun1. spoken used when speaking to a man in order to be polite or show respect:
    ‘Report back to me in an hour, sergeant.’ ‘Yes, sir.’
    Can I help you, sir?
    Sir__ You dropped your wallet. ⇨ madam(1), ma'am
2. Dear Sir/Sirs used at the beginning of a formal letter to a man or to people you do not know
3. Sir a title used before the first name of a knight or baronet:
    Sir Paul McCartney
    Sir Jasper
4. British English spoken used by children at school when speaking to or talking about a male teacher:
    Sir, I’ve forgotten my homework.
    Look out – sir’s coming back__ ⇨ miss²(4)
5. no/yes sir__ (also no/yes siree__ especially American English) old-fashioned spoken used to emphasize a statement or an answer to a question:
    I will not have that man in my home, no sir!

🔑 sirBrE /sɜː(r)/ 🔊NAmE /sɜːr/ 🔊BrE /sə(r)/ 🔊NAmE /sər/ 🔊 noun🔑 used as a polite way of addressing a man whose name you do not know, for example in a shop/store or restaurant, or to show respect （对不认识的男性的称呼或对男性的尊称）先生◆Good morning, sir. Can I help you? 早上好，先生。您要点什么？🔊🔊◆Are you ready to order, sir? 先生，可以点菜了吗？🔊🔊◆'Report to me tomorrow, corporal!' 'Yes, sir!' “下士，明天来向我报告！” “是，长官！”🔊🔊◆'Thank you very much.' 'You're welcome, sir. Have a nice day.' “多谢。” “不客气，先生。祝您愉快。”🔊🔊  ➡  compare ma'am (1)  ➡  see also madam (1) 🔑 Dear Sir/Sirs used at the beginning of a formal business letter when you do not know the name of the man or people that you are dealing with （正式信函中对不知其名的男性收信人的称呼）先生，阁下◆Dear Sir/Sirs亲爱的先生／诸位先生◆Dear Sir or Madam亲爱的先生或女士🔑 Sir a title that is used before the first name of a man who has received one of the highest British honours (= a knight), or before the first name of a baronet （贵族头衔，用于爵士或准男爵的名字或姓名前面）爵士◆Sir Paul McCartney保罗 · 麦卡特尼爵士◆Thank you, Sir Paul. 谢谢，保罗爵士。🔊🔊  ➡  compare lady (6) (BrE) used as a form of address by children in school to a male teacher （中小学生对男教师的称呼）先生，老师◆Please, sir, can I open a window? 老师，请允许我打开一扇窗户好吗？🔊🔊  ➡  compare miss noun (4) ●ˌno ˈsir!●ˌno siˈree!(informal, especially NAmE) certainly not 决不◆We will never allow that to happen! No sir! 我们决不会允许那样的事情发生！决不会！🔊🔊●ˌyes ˈsir!●ˌyes siˈree!(informal, especially NAmE) used to emphasize that sth is true （强调所言不虚）的确◆That's a fine car you have. Yes sir! 你这辆车真好。的确好！🔊🔊