backbencher

A Member of Parliament who does not have cabinet rank, and who therefore sits on one of the backbenches or in one of the back rows of the legislature.

后座议员

普通议员

A student who does not perform well, especially one who sits at the back of the classroom.

A member of a team who does not usually play, but who is held in reserve.

Someone who does not play an active role in a process.