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re1

noun
🔊/reɪ/
🔊/reɪ/
(also ray)
(music音乐)
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  1. the second note of a major scale
大调音阶的第 2 音

re2

preposition
🔊/riː/
🔊/riː/
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  1. used at the beginning of a business letter, etc. to introduce the subject that it is about; used on an email that you are sending as a reply（用于商业信函等开头介绍主题或回复电子邮件）关于，事由
    • Re your letter of 1 September…关于你 9 月 1 日的来信…
    • Re: travel expenses回复：旅行开支
    Wordfinder
    Topics Phones, email and the internetc2