词根词缀：baro-, bar-, bary-

【来源及含义】Greek: weight, heavy; atmospheric pressure; a combining form meaning "pressure", as in barotaxis, or sometimes "weight", as in baromacrometer

【相关描述】In an extended sense, these elements may mean "difficult" or "slow".

【同源单词】abarognosis, baragnosis, baranesthesia, baresthesiometric, barhypesthesia, bariatrician

词根词缀：centro-, centr-, centri-, kentro-

【来源及含义】Greek > Latin: center; middle point, mid point; focus, focal point, focalize; zero in on

【相关描述】This element originally meant "sharp point, goad" or "spur".

【同源单词】acentric, acentric, acrocentric, allocentric, ambulatory surgery center, amphicentric