“瞳孔”怎么读？

他的瞳孔似乎略微放大。His eyes seemed slightly dilated.他可以看到裘莉亚眼里的瞳孔四周发白.He could see the white all round the irises of Julia's eyes.到了晚上，瞳孔就会扩大以接收更多光线。At night, the pupils dilate to allow in more light....

“瞳孔”的英语可以翻译为：pupil，pupilla，sight，apple of one's eye，the apple of one's eye ...