中文:
n. 学生；[解剖] 瞳孔；未成年人
My nephew is a second-year pupil.
我的侄子是一个小学二年级的学生。
This clever pupil learns things quickly.
这个机灵的学徒学东西很快。
The pupil adjusts its size according to the intensity of external light.
瞳孔会根据外界光线强弱调整大小。
Pupils contract in bright light.
瞳孔在明亮的光线下会收缩。
The school has over 400 pupils.
这所学校有400多名学生。
