bumper-to-bumper

adj, adv (of vehicles) in a line, each close behind the one in front （指车辆）首尾相接（的）: We sat bumper-to-bumper in the traffic jam. 我们遇到交通阻塞, 汽车一辆辆首尾相接动弹不得. * travel bumper-to-bumper 车一辆紧接一辆行驶.

bullfighting, bullfinch, bullfrog, bullhorn, bullion, bullish, bullock, bullring, bullshit, bully, bully-boy, bulrush, bulwark, bum, bumble, bumble-bee, bumbling, bumf (also bumph), bump, bumper, bumph, bumpily, bumpiness, bumpkin, bumptious, bumptiously, bumptiousness, bumpy, bun, bun-fight, bunch, bundle, bung, bung-hole, bungalow, bungle, bungler, bungling, bunion, bunk,