trichromatic vision

• 三色视觉

trichromatic vision的用法和样例：

例句

1. But was an extra photopigment all that was needed to evolve trichromatic vision?
   但是是否另一种感光色素必须完全进化成三色视觉？
2. In this view, trichromatic color vision can be considered a hobby of the preexisting spatial vision system.
   或许也没有这个必要，如果从这角度来看，我们可以把三色视觉看成既有空间视觉系统的次要活动。