re

1. 关于（用于商业信函、传真或其他文件中）
   You use re in business letters, faxes, or other documents to introduce a subject or item which you are going to discuss or refer to in detail.
   1. Dear Mrs Cox, Re: Household Insurance. We note from our files that we have not yet received your renewal instructions.
      亲爱的考克斯夫人，关于房屋保险一事，我们的文件显示尚未收到您的续保通知。

noun

1. the syllable naming the second (supertonic) note of any major scale in solmization

   Synonym:    ray