How does the iris of the eye control the pupil?外教提出的问题,下周就要说了,要英文的,语法准!
问题描述：
How does the iris of the eye control the pupil?
外教提出的问题,下周就要说了,要英文的,语法准!
答
The iris (plural: irides, in this context) is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupils and the amount of light reaching the pupil. "Eye co...