A school learner under the instruction or supervision of a teacher.

• A person studying under a particular master or mentor.

在学校接受教师指导的学习者。

• 在特定大师或导师门下学习的人。

The circular opening in the iris that lets light into the eye.

虹膜中央的圆形开口，让光线进入眼内。

A minor under guardianship or state protection; a ward. (law)

• Chiefly Scots law and historical usage.

受监护或国家保护的未成年人；被监护人。（法律）

• 主要用于苏格兰法，历史用法。