sexual dimorphism雌雄二形；两性异形
词根：dimorphic
dimorphic [动][植] 二态的；[晶体] 双晶的
dimorphous [动][植] 二态的（等于dimorphic）
1.This indicated that the pollen dimorphism also presented itself in the anthers on wheat plants.
这表明在小麦的活体花药中也存在花粉二型性现象。
2.This indicated that the pollen dimorphism also presented itself in the anthers on wheat plants.
3.Dimorphism The existence of two distinct forms.
出现两种不同的类型。