N-COUNT A tailback is a long line of traffic stretching back along a road, which moves very slowly or not at all, for example, because of roadworks or an accident. (拥堵造成的) 汽车长龙 [英国英语]
There was a seven-mile tailback on the motorway.
在高速公路上有7英里的汽车长龙。
N-COUNT In American football, a tailback is the player furthest from the front line. The tailback often runs with the ball. (美式足球) 攻方尾后位 [美国英语]
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