n (1)踪(足，痕)迹(marks made by sb/sth as he/she/it moves which can be seen and followed by others)[C，通常pl]：follow sb's～s through the snow/in the mud/into the woods 跟着某人的足迹在雪地上前进/跟着某人在泥地上的足迹前进/跟着某人的脚印进入森林;tyre/fresh bear～s 轮胎痕迹/熊的新足迹;〖同〗footprint，mark，sign，trail，path;

(2)路线(径)(pathway or course on which sth moves or may move)[C]：go along/follow in the same～of earlier explorers 沿着/顺着早期探险家走过的路线前进;the～of a storm/a ship/a comet/a satellite 风暴经过的路线/船航行的路线/彗星运行的轨迹/卫星飞行的轨迹;〖同〗course，path，way;

(3)崎岖道路，小路(径)(rough path or road)[C]：walk along the～to the village 沿着小路向村庄走去;a rough/mountain/sheep/bicycle/muddy～不平的小路/崎岖的山路/羊踏出的小道/自行车小径/泥泞的小路;

(4) 1)(火车的)轨道(rail or set of parallel rails on which a train or trolley runs)[C]：a single/double/railway/railroad～单轨/双轨/火车轨道/火车轨道;(train) leave the～(火车)出轨;The～went through a tunnel. 火车轨道穿过隧道。〖同〗rail; 2)火车站的月台(railway platform)[C](AmE)：The train will leave on～number three. 火车将从3号站台离去。

(4)跑道(course made for running or racing on)[C]：run five times round the～绕跑道跑五圈;excel at both～and basketball 擅长径赛和篮球;～racing/events 径赛/径赛项目;a motor-racing/cycling/running～汽车比赛/自行车比赛/赛跑的跑道;～and field 田径(体育)运动;

in one's tracks 突然，当场：He stopped in his～s. 他突然停了下来。

keep/lose track of sb/sth 与……保持/失去联系：I find it difficult to keep～of my old friends. 我觉得和老朋友保持联系很困难。

make tracks for 走向(infml)：It's past ten o'clock;it's time we were making～s for home. 已经10点多了，我们该回家了。

on the right/wrong track 想(做)得对/错：He couldn't solve the problem because he started out on the wrong～. 他解决不了这个问题，因为他从一开始就想错了。

→′track record 过去的成绩(就);′track suit (运动用)宽松暖和的衣裤;′trackless adj 没路的;无轨的;

vt 追踪(follow the footprints or trail of)[T+n，T+n+prep (to)]：～a satellite/a missile/the weather balloons using radar 使用雷达追踪卫星/导弹/气象气球;～a criminal using dogs 用警犬追踪罪犯;～a terrorist/the person to the hide-out (his house) 追踪恐怖分子/那个人直到他隐藏的地方(他家);～an animal to its lair 追踪一只动物直到它的巢穴;～ing station追踪站;〖同〗trail，follow，trace;

track down (v adv) 1)追踪并发现(vt)：～down the dangerous bears/wild animals to their lair 追踪那些危险的熊/野生动物至其巢穴; 2)找到，查到(vt)：～down the answers (in books)/the cause of the infection(在书里)查到答案/查到感染源;

track in (v adv)脚上带进(泥)(vt)：Look at all that mud that you've～ed in on your feet. 你看你脚上带进来的泥。

→′tracker n 追踪野兽等的人;′tracked adj有履带的;

【辨异】 1)track与lane和path的区别见LANE。2)track与trace和trail的区别见TRACE。