LASIK eye surgery changes the shape of your cornea—the transparent membrane that arcs over your pupil and the colored part of your eye (iris).

LASIK 眼科手术改变了你的角膜的形状——角膜是覆盖在你的瞳孔和你的眼睛的有色部分（虹膜）上的弧形透明膜。

youdao

Living underground can depress production of the chemicals that help dilate and contract the pupil in response to changes in light.

由于长期处于地下，作为对光照减少的反应，帮助瞳孔扩张和收缩的化学物质的产生会相应减少。

youdao

Objective: To observe the pupil diameter changes of different diopter under different rays.

目的：观察不同的屈光度在不同光线下瞳孔直径的变化。

youdao

Under the plans, there will be changes to school performance tables, Ofsted inspections and governance, and a "pupil premium" system will channel more money to the most deprived children.

BBC: Gove unveils package of education reforms

Russell Hobby of the National Association of Head Teachers said there had been no time to see how pupil premium funding was working, so it was too early to start planning for further changes.

BBC: Primary schools face tougher targets

Stoke-on-Trent City Council said the changes were because of the city's education was not up to standard, and because of declining pupil numbers and the poor condition of old school buildings.

BBC: RELATED BBC SITES