| 单词 | RR |
| 释义 | RR 1 ENTRIES FOUND: RR abbreviation RR abbreviation Learner's definition of RR 1 railroad
2 US or R.R. rural route乡村公路 ◊ The abbreviation RR is used in mailing addresses to places that are located in the country to show which delivery route the mailbox is located on.缩略词RR用于美国乡村的邮政地址。
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