dear sir or madam与ladies and gentlemen有什么区别?

Dear Sir or Madam: Dear Sir or Madam, 翻译Dear Sir or Madam 英语翻译用在请柬里 是用Your Excellency,Ladies and Gentlemen好 还是Dear Sir 英语改错题,Dear sir or madam,... 称呼是用dear madam or sir 还是用dear sir or madam对 英语书信开头dear sir or madam,为什么不是dear madam or sir 请求修改语法错误,Dear Sir or Madam,As a warm-hearted and attentivene 英语翻译Dear Madam or Sir:It's my honor to meet you in XXX.And w 请问这句英语语法有错误吗Dear Sir or Madam, Dear Sir/Madam, Dear Sir/Madam: