member

/ˈmɛmbər/

one of the persons who compose a social group (especially individuals who have joined and participate in a group organization)

中文释义：成员；会员

Every member of the team must contribute equally to achieve the goal.

团队的每个成员都必须平等贡献才能实现目标。

She has been an active member of the club for over five years.

她成为该俱乐部的活跃会员已经超过五年了。