pupil noun [C] (EYE PART) the circular black area in the centre of an eye, through which light enters 瞳孔

Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil. This is known as the pupillary light reflex.

Pupil是英语名词，发音为英 [ˈpjuːpl]、美 [ˈpjupəl]，主要含义包括学生、瞳孔及未成年人。 其多义性源于拉丁语"pupillus"（被监护人）与"pupula"（小人偶）的词源分化，分别衍生出现代教育及解剖学领域 …

But the most cutting-edge tool under development is the "teachable agent" —a computerized character who learns, tries, makes mistakes and asks questions just like a real-world pupil.

10. In his youth, Socrates was a pupil of the philosopher Archelaus, and thereafter practised philosophy without ever writing any of it down. 苏格拉底 年轻 时 是 哲学家 阿基劳斯 的 学生， 从此 毕生 以 哲学 …

The meaning of PUPIL is a child or young person in school or in the charge of a tutor or instructor : student.

pupil, in the anatomy of the eye, the black centre opening within the iris through which light passes before reaching the lens and being focused onto the retina.

n. The apparently black circular opening in the center of the iris of the eye, through which light passes to the retina. [Middle English, from Old French pupille, from Latin pūpilla, little doll, pupil of the eye …

Feb 26, 2019 · The pupil is the opening in the center of the iris (the structure that gives our eyes their color). The function of the pupil is to allow light to enter the eye so it can be focused on the retina to …

Factsheet What does the noun pupil mean? There are three meanings listed in OED's entry for the noun pupil. See ‘Meaning & use’ for definitions, usage, and quotation evidence.