名词小路，小道; 痕迹，踪迹; 轨道，音轨; 方针，路线
及物动词跟踪; 追踪; 监看，监测
不及物动词沿着轨道前进; 沿着一条路走，旅行; 位于一队列中
1. 小道;小径
A track is a narrow road or path.
e.g. We set off once more, over a rough mountain track.
我们沿着一条崎岖的山间小路再度出发。
2. 跑道;赛道
A track is a piece of ground, often oval-shaped, that is used for races involving athletes, cars, bicycles, horses, or dogs called greyhounds.
e.g. The two men turned to watch the horses going round the track.
那两个男人转身观看赛马沿赛道而行。
e.g. ...the athletics track.
田径跑道
3. 铁轨;轨道
Railway tracks are the rails that a train travels along.
e.g. A woman fell on to the tracks.
一名女子摔倒在铁轨上。
4. (CD、唱片或磁带上的一首)歌曲，乐曲
A track is one of the songs or pieces of music on a CD, record, or tape.
e.g. Graeme Naysmith has produced two of the ten tracks on this album.
格雷姆·内史密斯创作了这张专辑十首歌中的两首。
5. 足迹;踪迹
Tracks are marks left in the ground by the feet of animals or people.
e.g. The only evidence of pandas was their tracks in the snow...
熊猫活动的唯一迹象是它们留在雪地上的足迹。
e.g. McKee suddenly noticed tire tracks on the bank ahead.
麦基突然注意到前方岸边的轮胎痕迹。
6. 跟踪;追踪
If you track animals or people, you try to follow them by looking for the signs that they have left behind, for example the marks left by their feet.
e.g. He thought he had better track this wolf and kill it...
他认为最好跟踪这只狼，杀了它。
e.g. I followed him, tracking him in the snow until finally he got tired.
我跟着他，在雪地里追踪他，直到他最终体力不支。
7. (以卫星、雷达等)追踪…的动向
To track someone or something means to follow their movements by means of a special device, such as a satellite or radar.
e.g. Our radar began tracking the jets...
我们的雷达开始追踪喷气式飞机的动向。
e.g. Forecasters are also tracking hurricane Josephine.
气象预报员也在追踪飓风“约瑟芬”的动向。
8. 追踪调查;探究
If you track someone or something, you investigate them, because you are interested in finding out more about them.
e.g. If it's possible, track the rumour back to its origin...
如果可能，应追查谣言的源头。
e.g. The player is being tracked by Juventus.
该选手正为尤文图斯队所追踪关注。
9. (同等年龄、能力的孩子组成的)班级，班组
In a school, a track is a group of children of the same age and ability who are taught together.
及物/不及物动词使清楚，澄清
及物动词说明; （尤指通过加热使黄油）纯净; 使（头脑、神智等）清醒
不及物动词（液体）变得澄清; 净化; 变得清楚
1. 阐明;阐释;说明
To clarify something means to make it easier to understand, usually by explaining it in more detail.
e.g. Thank you for writing and allowing me to clarify the present position...
谢谢你的来信，并允许我阐明目前的立场。
e.g. A bank spokesman was unable to clarify the situation.
一位银行发言人未能把情况解释清楚。
形容词专业的; 职业的; 专业性的
名词专业人士
1. 职业的；专业的
Professional means relating to a person's work, especially work that requires special training.
e.g. His professional career started at Liverpool University.
他的职业生涯是从利物浦大学开始的。
形容词严守时刻的， 准时的，正点的
1. 准时的；守时的
If you are punctual, you do something or arrive somewhere at the right time and are not late.
e.g. He's always very punctual. I'll see if he's here yet.
他总是很准时。我去看看他是否已经来了。
名词海关; 海关; 关税; 习惯( custom的名词复数)
形容词定做的; 专做定货的
1. 海关(部门)
Customs is the official organization responsible for collecting taxes on goods coming into a country and preventing illegal goods from being brought in.
e.g. ...components similar to those seized by British customs.
与英国海关截获的那些物品相似的部件
e.g. ...customs officers.
海关官员
2. 海关
Customs is the place where people arriving from a foreign country have to declare goods that they bring with them.
e.g. He walked through customs.
他步行通过海关。
3. (税收)海关的，进出口的
Customs duties are taxes that people pay for importing and exporting goods.
4. see also: custom