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.
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.
论新斯的明、毒扁豆碱和毛果芸香碱滴眼给药，均能缩小兔眼瞳孔，其时效关系相似。
Conclusion Physostigmine, neostigmine and pilocarpine, when applied locally to the eye in rabbits, could cause myosis and their time-effect relationships were comparable.
结果表明：在文本阅读中，疲劳会使瞳孔缩小，心理负荷增大会使瞳孔放大，一定的心理负荷可以起到维持瞳孔大小不变的作用；
The results showed that in text reading, pupil diameter decreased with fatigue, whereas increased with mental load and persisted with sustained mental load;
结果表明：在文本阅读中，疲劳会使瞳孔缩小，心理负荷增大会使瞳孔放大，一定的心理负荷可以起到维持瞳孔大小不变的作用；
The results showed that in text reading, pupil diameter decreased with fatigue, whereas increased with mental load and persisted with sustained mental load;
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