異性相吸

opposite polarities attract / (fig.) opposite sexes attract / opposites attract

different / other / hetero- / unusual / strange / surprising / to distinguish / to separate / to discriminate

the opposite sex / of the opposite sex / heterosexual / different in nature

nature / character / property / quality / attribute / sexuality / sex / gender / suffix forming adjective from verb / suffix forming noun from adjective, corresponding to -ness or -ity / essence / CL:個|个[ge4]

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)

mutual attraction (e.g. electrostatic) / to attract one another

to breathe / to suck in / to absorb / to inhale