劍橋詞典formal (especially in business letters ) about; on the subject of (尤用于商務(wù)信函中)關(guān)于,茲就,事涉 Re your communication of 15 February ... 茲就你2月15日來(lái)信… used in the subject line of an email when it is a reply to another email , followed by the subject of the original message (用于回復(fù)電子郵件時(shí)的標(biāo)題行,在被回復(fù)的郵件的標(biāo)題之前) Re: invoice 回復(fù):invoice 返回 re