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sexual dimorphism
agric.	性二型性; 雌雄异型; 性二型; 性别二态现象 (dimorphismus sexualis)
anim.husb.	性别二态现象
desert.	两性异形
genet.	性别两形性; 性别二态
repr.biol.	性两形性; 雌雄异性; 两性状态