| 词汇 | rr |
| 释义 | RR US RR (TRAIN)written abbreviation forrailroadUS铁路，铁道（railroad的缩写） Railways & railway lines aerial tram aerial tramway Amtrak artery branch line electrify funicular junction level crossing metro railroad siding signal signal box sleeper switch track underground unelectrified whistle-stop RR (POST)written abbreviation for rural route: used in addresses in some areas in the US乡村邮件投递路线（用于美国乡村地区通信地址中，rural route的缩写） Communications - the postal system addy BFPO care ofidiom catch the post collection box consignee delivery direct mail dispatch first class Freepost pigeonhole postage poste restante postmark self-addressed sorting office stamp window zip code You can also find related words, phrases, and synonyms in the topics: Roads & routes in general RR (BREATHING)medical specialized written abbreviation for respiratory rate (= the rate at which someone breathes in and out)呼吸频率（respiratory rate的缩写） Animal physiology: breathing & stopping breathing aerobic asphyxia asphyxiation aspirate aspiration breathable breathe (something) in choke draw breathphrase expire huff and puffidiom hyperventilation lungful non-breathing out of breath pant puffed puffed out stifle strangulation |
| 随便看 |
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。