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词汇 RR
释义
RR
US
(TRAIN)
铁路,铁道(railroad的缩写)
written abbreviation for railroad US
(POST)
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)
written abbreviation for rural route: used in addresses in some areas in the US
(BREATHING)
medical specialized呼吸频率(respiratory rate的缩写)
written abbreviation for respiratory rate (= the rate at which someone breathes in and out)
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