1. P 踪迹，痕迹，足迹　 line or series of marks left by a moving vehicle, person, animal, etc.
2. C 小路　 path or rough road, especially one made by vehicles, people or animals
3. C 路径，进程路线　 course taken by sth/sb (whether it can be seen or not)
4. C U 轨道　 set of rails for train
5. C 跑道　 prepared course or circuit for racing
6. C 轮带，履带　 continuous belt round the wheels of a bulldozer, tank, etc., on which it moves

　cross the ～　横过路轨
　jump the ～　出轨
　lay ～s　铺轨
　leave the ～　出轨
　make ～s　走开，跑掉，逃走
　run round the ～　围着跑道跑步
　cover up one's ～s　掩藏自己的企图〔计划、行动等〕
　keep ～ of　记录，跟踪…的线索，继续注意…的发展
　lose ～ of　看不清，未能把…记录下来，失去…的线索
　close ～　紧紧跟踪
　double ～　复线
　fast ～　良好的跑道
　main ～　主轨
　single ～　单线
　slow ～　不好的跑道
　cart ～　马车路，乡村土路
　railroad ～　铁轨
　railway ～　铁轨
　sound ～　音轨
　～ athletics　（运动会）田径赛
　～ events　（运动会）径赛
　～ man　径赛运动员
　～ racing　径赛
　～ team　田径队
　in one's ～　就在那里，就那样，当时，当场
　in the ～ of　跟在…的后面，仿效，学样
　off the beaten ～　偏僻的，不落俗套的
　on the ～　在跑道上
　on the ～ of　跟踪追赶，尾随，得到…的线索，未出岔子

　We followed his tracks through the snow.　我们循着雪地上他留下的脚印走。
　We followed the tracks of the rabbit into the woods.　我们循着兔子的足迹进入森林。
　The fox didn't leave any tracks.　那只狐狸没有留下任何足迹。
　The motorcar tracks are very clear.　汽车的痕迹很明显。
　A track runs through the woods to the farmhouse.　一条小路穿过树林通向农庄住宅。
　They passed a muddy track through the forest.　他们穿过森林的泥泞小路。
　It's the track of the coming storm.　这就是即将来临的风暴路线图。
　The Earth crosses the tracks of certain comets.　地球穿过某些彗星的轨迹线。
　The locomotive ran off the track and the cars overturned.　机车出了轨，车厢翻了。
　Edison saw a boy playing on the track at a station.　爱迪生看见一个男孩在车站的铁轨上玩耍。
　Time and again they laid their ears against the track to listen for the sound of approaching wheels.　他们一回又一回地把耳朵贴近铁轨，听听火车声，是不是快到了。
　The railway tracks join up into a single line on the other side of the town.　在城镇那边的几条铁道合为一条单线。
　The train for London is on track eight.　开往伦敦的列车停在第8道。
　He is a track man.　他是个径赛运动员。
　Athletics consists of track and field sports such as running, high jump, etc.　竞技运动包括赛跑、跳高等田径项目。
　His new album has two great tracks on it.　他的新唱片里有两段特别棒。
　They go on planting in the same track year after year.　他们年复一年地种树。

 ♣ (hard) on sb's track〔on the track of〕
　追踪某人；寻找某人或某物　pursuing sb; looking for sb/sth
　The Fraud Squad are hard on her track and she's trying to get out of the country.　廉政小组正在追踪她，她正企图逃到国外去。
　The police are on the track of the gang.　警察正在追踪那帮团伙。
　Imes says he's on the track of a chap who would be ideal for the vacant manager's job.　艾姆斯说他正在寻找一个人选来填补空缺的经理职位。
　I'm on the track of a rare stamp I need to complete the set.　我正在寻觅一枚罕见的邮票，我需要用它来补全那一套邮票。
 ♣ in one's tracks
　〈非正〉就地，突然　 where one is; suddenly
　She fell dead in her tracks.　她当场死去。
　Her questions stopped me in my tracks.　她提的问题让我当场下不来台。
 ♣ lose〔keep〕 track of
　与…失去〔保持〕联系；（不）了解…的动态　(not) keep informed about sb/sth; (not) have knowledge about sb/sth
　As a doctor, Brooks has to keep track of the latest developments in medicine.　作为一名医生，布鲁克斯必须了解医学的最新发展动态。
　How do you keep track of such a large family?　这样一个大家庭你是怎样照管的呢?
　The library has a new system for keeping track of its books.　图书馆有一套新办法来掌握图书的动态。
　He's lost all track of her since they left school.　自毕业后，他完全失去了和她的联系。
　We lost all track of time.　我们完全不知道是什么时候了。
　I've lost track of how many boyfriends my daughter has had.　我已记不清我女儿有过多少男朋友。
　He soon lost track of how much money he had spent.　他很快就记不清自己花了多少钱。
 ♣ make tracks (for)
　〈非正〉（向…)离去 move away (in the direction of)
　It's time we made tracks.　我们该走了。
　She suddenly got up and made tracks for the door.　她突然站了起来，朝门口走去。
 ♣ on the right〔wrong〕 track
　想法〔做法〕对〔不对〕 thinking or acting in a correct〔incorrect〕　way
　That is not exactly the correct answer, but you're on the right track.　那答案并不完全正确，不过你的方向是对的。
　We haven't found the solution yet, but I'm sure we are on the right track.　我们还没有找到解决办法，但我肯定我们的思路是对的。
　That's one approach to the problem, I suppose, but personally I think you're on the wrong track.　我想这可能是解决问题的一种办法，但我觉得你思考的方向不对头。
　He couldn't solve the problem because he started out on the wrong track.　他不可能解决这个问题，因为一开始他的思路就错了。

 ♣ track, path, road, route, way
　参见path条。

　我们必须读报以便了解国际形势（的走向）。
　［误］ We must read the papers so as to keep track with world affairs.
　［正］ We must read the papers so as to keep track of world affairs.
　［析］ keep track of是固定用法，介词of不能改为with.

　vt.　跟踪，追踪 follow (an animal, etc.) by the mark, footprints, etc.

　～ bear　追踪熊
　～ criminal　追踪罪犯
　～ hare　追踪野兔
　～ planes　跟踪飞机
　～ satellite　搜索卫星
　～ thief　跟踪小偷
　～ closely　紧紧地盯住
　～ about　走来走去
　～ down　追捕
　～ out　查出
　～ up　踩脏
　～ to　跟踪到…
　～ with　用…跟踪

　The hunters tracked the bear and killed it.　猎人们追踪到那只熊并把它杀了。
　The hunter was tracking a hare.　猎人正在追踪一只野兔。
　Scientists are trying to track the lost satellite.　科学家们正试图搜寻那颗失踪的卫星。
　Some special scientific instruments are used for tracking planes.　有些特殊科学仪器专门用来跟踪飞机。
　Don't track the floor.　别在地板上踩出脚印。
　The thief was closely tracked by the policeman.　那窃贼被警察严密地跟踪着。

 ♣ track down　(v.+adv.)
　追捕到，追查出　find (sb/sth) by or as by hunting
　All citizens should help the police in tracking the criminals down.　所有公民都应该帮助警察追捕罪犯。
　We finally tracked down our lost companion in a public house.　我们终于在一家酒馆里找到了我们失散的伙伴。
　I have never been able to track down the person who wrote the story.　我一直未能找到写那篇故事的人。
　The hunters tracked down the game in the forest.　猎人在树林里追捕猎物。
　I finally tracked down the reference in a dictionary of quotations.　我终于在引语词典中查到了那段文字。
　It was not long before I tracked down the lost watch.　不久我就找到了遗失的表。
　With no interpreters to help, I often had to track down the meaning of words by sheer guessing.　因为没有翻译帮忙，我往往靠猜测来弄懂话的意思。
　Were the doctors able to track down the cause of the infection?　医生们能查出感染的原因吗?
　He was determined to track down the cause of food spoilage.　他决心查出食品腐烂的原因。
　The criminal was tracked down and knocked off by the police.　那个罪犯被警察追到后逮捕起来了。
 ♣ track in　(v.+adv.)
　带进屋内　bring (usually mud) indoors by walking
　Look at all that mud that you've tracked in on your feet!　看，你把脚上的泥都带进屋里来了。
 ♣ track up　(v.+adv.)
　〈主美·非正〉踩脏… make (usually a floor) dirty with one's shoes
　Get out of my kitchen I don't want you children tracking up my nice clean floor!　从我的厨房里滚出去，我可不想让你们这些孩子把我干干净净的地板踩脏。

 ♣ track, hunt
　这两个词的共同意思是“追捕”，其区别是：track强调跟踪或顺着线索追查；而hunt既可指猎取动物，也可泛指搜寻人或其他事物。例如：
　The men had gone to the forest to hunt wild game.　男人们已去森林中打野味了。
　They hunted everywhere for her.　他们到处寻找她。
　She hunted the house over for her lost ring.　她在屋子里翻箱倒柜，到处寻找那只丢失的戒指。

　［同义词］ n. mark, sign, trace, path, road, route, trail v. chase, follow, pursue, trace, trail
　［词源］　古法语trac（拖，跟随）