Noun:

1. the beginning of a trail

Trailln.特雷尔trailn.踪迹；小径；尾；一系列vi.拖；落后于vt.追踪；拖拽；尾随trailing disk plow牵引式圆盘犁trail transfer car拖车trail ring network列式环行网trailing transient后沿瞬变特性trailing edge flow底部流动, 后缘流动trailed cultivator牵引式中耕机trail on the floor(衣服)拖在地板上trailing pole horn后极尖Trailing Arm Drive拖臂传动trailing edge slot三维缝隙