n. normal or customary activity of a person in a particular social setting
n. 角色, 职责, 任务
[医] 作用, 功用
1. She plays an important role in the team.
她在团队中扮演着重要角色。
2. Each member has a specific role to fulfill.
每个成员都有一个特定的角色要履行。
3. The teacher's role is to help students learn.
教师的角色是帮助学生学习。