Backen.巴克backn.后面；背脊；靠背；后背；后卫vt.支持；后退adv.向后地adj.向后的；后面的；偏远的；过时的；积欠的back stall后座back front八字砖,盖板砖backliningn.衬板(背衬料)backburner不重要的back piece反向角钢back issue过期刊物back panel后板backslopern.内坡机；刮沟刀backwoodsy蛮荒的,粗野的back moneyn.拖欠款；近期未付款