相互關係

interrelationship

each other / one another / mutually / fret on the neck of a pipa 琵琶[pi2 pa5] (a fret on the soundboard is called a 品[pin3])

appearance / portrait / picture / government minister / (physics) phase / (literary) to appraise (esp. by scrutinizing physical features) / to read sb's fortune (by physiognomy, palmistry etc)

each other / mutual

mutual

mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve

relation / relationship / to concern / to affect / to have to do with / guanxi / CL:個|个[ge4]

to connect / to relate to / to tie up / to bind / to be (literary)