In one type of squirrel monkey, the males lack a visualpigment called L-opsin.
在一种松鼠猴中，雄松鼠猴缺少一种叫做L视蛋白视觉色素。
2
Vision is resulted in the reaction of visual purple that is a pigment of sensitization.
视觉的产生是感光色素——视紫红质发生光化学反应的结果。
3
Ours is still the result of an evolutionary reclamation job and remains one pigment short of the tetrachromatic visual system found in birds and in many reptiles and fish.