pupil

[pjupl]

释义

n. 瞳孔
the opening in the iris of the eye that narrows and widens as more or less light passes through to the retina.

例句
Jane: That button made your pupils dilate. Now you've gone pale. (The Mentalist)
简：看到那枚纽扣，你的瞳孔就放大。现在又脸色苍白。（超感神探）