回信 1.(写复信) write in reply; write back; reply to one's letter 望早日回信。 i'm looking forward to hearing from you soon.2.(复信) a letter in reply3.(答复的话) a verbal message in reply; reply 我没有收到回信。 i had no reply to my letter. 事情办妥了, 我给你个回信儿。 i'll let you know when i'm through with it