Noun:

1. the offensive football players who line up behind the linemen

backhoen.反向铲；反铲挖土机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 coordination反馈配位backarc spreading弧后扩张Back in a tick.一会儿就回来。back-back porch水平同步信号后延时间back-resistancen.反向电组back bend molding一种边向后弯曲的油画外框back to salisbury回梳back ampere turns逆向安匝back range faults后山断裂带back porch effect后肩效应