作为对光线作出的反应，眼睛的瞳孔会放大或缩小。
The pupil of the eye dilates and contracts in response to light.
我们的眼睛能任意放大或缩小，来观察就近或远处的事物，就像你们人类的照相机。
Our eyes have the capacity to magnify to perceive close up or pan back to see the distance at will, much like your cameras in human form.
随着进入眼睛的光的多少，瞳孔可以缩小或放大。
The pupil can be narrowed or widened according to the amount of light that enters the eyes.
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