n.(人眼)圆锥细胞；(圆)锥体
名词cone的复数形式.
The balls are shotout of two donut shaped objects surrounding the cones. 这些球体从围绕这这些锥体的两个发射装置中射出。
The human eye has three types of light receptors, known as cones, located in the retina. 人眼具有三种类型的光接收器，称之为锥体，分布在视网膜上。
