橘子朗文词典

RR

橘子朗文词典

剑桥词典

    RR (TRAIN)


    written abbreviation for railroad noun
    铁路，铁道（railroad的缩写）

    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）

    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） 返回 RR