/sɜ:(r) ||; sɝ/noun1 [sing] used as a polite way of speaking to a man whose name you do not know, for example in a shop or restaurant, or to show respect 先生(对男士的礼貌称呼,尤用于招呼顾客或表示尊敬): I'm afraid we haven't got your size, sir. 对不起,先生,我们恐怕没有你的尺码。 ☞Look at madam. 参看madam。
2 [C] used at the beginning of a formal letter to a male person or male people (用于正式信函的开头,以称呼不知姓名的男士): Dear Sir... 敬启者Dear Sirs... 敬启者 ☞Look at Madam. 参看Madam。
3 /sə(r) ||; sɚ/ [sing] the title that is used in front of the name of a man who has received one of the highest British honours (获颁英国最高荣誉者的称号)爵士