| 释义 | 
		- abbr.(=rare earths)稀土元素;事物;房地产
 - n.【乐】全音阶的长音阶第二音
 - prep.事由
 - 网络再;重新;雷诺数(Reynoldsnumber)
 
 prep. on the subject of,with regard to,with reference to,concerning,regarding 1.  | (用于商业信函等开头介绍主题或回复电子邮件)关于,事由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  |  
  | 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  |  
 prep.  |  |  n.  |  |  un.  |  |  abbr.  | 3. Reformed Episcopal (基督教)新主教派的 5. Royal Engineers 〔英国〕皇家陆军工兵 3. Reformed Episcopal (基督教)新主教派的 5. Royal Engineers 〔英国〕皇家陆军工兵  |  
 prep.  | 2. used in business letters for introducing the subject that you are going to write about  |  sym.  |  |  n.  | 1. a syllable that represents the second note in a scale when singing solfeggio. 2. the second note in the sol-fa musical scale  |  abbr.  |  |  
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