And that wonderfully complex system probably helped you learn about the anatomy and physiology of vision today, starting with the structure of the eye and its three layers: the fibrous, vascular, and inner layers.

这个极其复杂的系统可能帮助你了解了今天视觉的解剖学和生理学，从眼睛的结构和它的三层开始：纤维、血管和内层。