RR
USRR(TRAIN)
written abbreviationforrailroadUS
铁路，铁道（railroad的缩写）Railways & railway lines
- Amtrak
- artery
- branch line
- electrify
- funicular
- junction
- level crossing
- light rail
- light railway
- metro
- monorail
- railroad
- railroad tie
- siding
- signal
- signal box
- switch
- switchback
- track
- underground
RR(POST)
written abbreviationforruralroute: used inaddressesin someareasin 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
- care ofidiom
- collection box
- consignee
- delivery
- direct mail
- dispatch
- first class
- Freepost
- letterbox
- mail slot
- pigeonhole
- postage
- postbox
- postmark
- self-addressed
- stamp
- window
- zip code
You can also find related words, phrases, and synonyms in the topics:
Roads & routes in general
RR(BREATHING)
medicalspecialized
written abbreviationforrespiratoryrate(= therateat which someonebreathesin and out)
呼吸频率（respiratory rate的缩写）Animal physiology: breathing & stopping breathing
- aerobic
- aerobic respiration
- anaerobic respiration
- asphyxia
- asphyxiation
- breathable
- breathlessly
- draw breathphrase
- exhale
- expire
- heave
- puff
- shallow
- shortness
- sleep apnoea
- smother
- strangulate
- suffocation
- throttle
- winded