back-bencher

n (Brit) member of Parliament who does not hold an important position in the government or opposition 後座议员（在政府或反对党中均不担任重要职务的国会议员）.

bacchanal, baccy, Bach, bachelor, bacillus, back, back and forth, back away, back down, back down off, back down/off, back number, back of, back out of, back road, back room, back seat, back talk, back up, back-bench, back-breaking, back-formation, back-pedal, back-up, back-yard, backache, backbite, backbiter, backbiting, backbone, backchat, backcloth, backcomb (also tease), backdate, backdrop, backer, backfire, backgammon, background, backhand,