兩性異形

sexual dimorphism

two / both / some / a few / tael, unit of weight equal to 50 grams (modern) or 1⁄16 of a catty 斤[jin1] (old)

male and female / both types (acid and alkaline, positive and negative etc) / (chemistry) amphoteric

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]

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

not the usual type / atypical / heterotype

to appear / to look / form / shape