To whom it may concern为什么要用it?

To whom it may concern为什么要用it? To Whom It May Concern怎么用 To whom it may concern, 英语翻译To whom it may concern. To whom it may concern怎么翻译, 请翻译 TO Whom It May Concern 英语翻译to whom it MAY concern To whom it may concern什么情况下用? 关于英文证明中的TO WHOM IT MAY CONCERN: 信件中的To whom it may concern用中文怎样讲啊? to whom it may 英语翻译To Whom It May Concern：It is my great pleasure to recomm