n (1)痕(踪，足)迹(mark，trace，course or path left by a moving body)[C]：leave a～of destruction/dust/water/blood 留下破坏的痕迹/扬起一股灰尘/留有水的印迹/留有血迹;leave～of debts 欠下一堆债;vapour/jet～s 蒸汽/喷气尾迹;～s of smoke 缕缕烟雾;hard/hot on sb's～紧跟在某人(某物)的后面;〖同〗mark，sign，trace;

(2)崎岖小道(path or track made across a wild region，over rough country，or the like)[C]：keep to/follow the～沿着/沿着小路走;climb up a mountain～爬上山间小路;a～through the forest/the mountains 通过森林/山区的崎岖小路;〖同〗path，pathway，way;

(3)猎(臭)迹(scent of a person or animal)[C]：follow/find the～of a fox (bear) 跟着/找到狐狸(熊)的臭迹;be on the～of the escaped convict/the kidnapper 正在追捕逃犯/绑架者;〖同〗track，scent，sign，mark，trace;

v (1)拉，曳，拖((cause sth to)be dragged along the ground or some other surface)[I，I+prep，I+adv，T+n，T+n+prep，T+n+adv]：The kite's tail～ed in the air. 风筝的尾巴拖曳在空中。(sth) be～ing along/on the floor/in the mud(某物)拖在地板上/泥里;The defeated army～ed back from the front in complete disorder. 败军从前线溃逃回来。a bird～ing a broken wing 拖着断翅的鸟;a child～ing a toy car 拖着玩具小汽车的小孩;An aeroplane flew across the sky～ing white vapour. 一架飞机拖着白色的蒸汽尾迹飞过天空。(sb) be～ing a toy cart on a string/clothes from the suitcase(某人)用绳子拖着一辆玩具车/把衣服从衣箱里拽出来;〖同〗drag，tow，draw，pull;〖反〗push;

(2)追踪(follow the traces or scent of，as in hunting;track)[T+n，T+n+prep (to)]：A pack of wolves～ed the herd of reindeer. 一群狼追踪一群驯鹿。～a criminal/a thief to his hide-out 跟踪罪犯/贼到其藏匿的地方;〖同〗track，trace，follow，tail;〖反〗flee;

(4)无精打采地走(move or walk slowly and usu wearily，esp behind others)[I+prep (behind)，I+adv (along)，I+adv (along) prep (behind)]：(sb)～along behind one's parents/one's teachers(某人)慢吞吞地跟在父母/老师后面;～along behind the main force/others 无精打采地跟在主力部队/其他人后面;The defeated soldiers～ed past me one by one. 打了败仗的士兵一个一个垂头丧气地从我身边走过。〖同〗follow，move;

(4)失利，落后(be losing in a contest)[I，I+prep (by/in)](通常用于prog)：be～ing badly in the opinion polls 民意测验中大大失利;be～ing by two goals to one 以一比二落后;〖反〗lead;

(5)蔓延(生)(extend，grow over a surface，as a vine or plant)[I+prep]：roses/ivy～ing over the walls蔓生在墙壁上的玫瑰/常春藤;

trail away/off (v adv)说话声逐渐变小(vi)：Her voice～ed off into silence. 她说话的声音渐渐变小，最后一点也听不到了。

→′trail-blazer n 开拓者，先驱;′trail-blazing adj 带头的，打先锋的;′trailer n 拖车;(美)(可供居住的)篷车;电影(视)的预告片;

【辨异】 1)trail与trace和track的区别见TRACE; 2)trail与drag、draw、pull、haul和tow的区别见DRAG。