trace

trace¹
verb
[with obj.]

find or discover by investigation
（通过调查）找到，发现
police are trying to trace a white van seen in the area.
警方正设法查找曾在此地区出现的白色货车。
■find or describe the origin or development of
追溯，追究，查考
Bob's book traces his flying career with the RAF.
鲍勃的书追溯了他在英国皇家空军的飞行生涯。
■follow or mark the course or position of (something) with one's eye, mind, or finger
追踪，跟踪
through the binoculars, I traced the path I had taken the night before.
我用双筒望远镜追踪了昨晚走的路。
■take (a particular path or route)
沿（特定路径）走
a tear traced a lonely path down her cheek.
一滴泪珠孤寂地滑下她的脸颊。
copy (a drawing, map, or design) by drawing over its lines on a superimposed piece of transparent paper
映描，描摹
■draw (a pattern or line), especially with one's finger or toe
（尤指用手指、脚趾）画（图，线）
■give an outline of
勾画出轮廓，描绘
the article traces out some of the connections between education, qualifications, and the labour market.
这篇文章勾勒出教育，资格及劳动力市场之间的某些联系。

noun

a mark, object, or other indication of the existence or passing of something
痕迹，踪迹
remove all traces of the old adhesive.
除去所有旧的粘合剂留下的痕迹。
[mass noun]the aircraft disappeared without trace.
飞机消失得无影无踪。
■(W. Indian& US)a beaten path or small road; a track
(西印度，美)踏出来的小路，小径；轨迹
■a physical change in the brain presumed to be caused by a process of learning or memory
（大脑上的学习或记忆）痕迹，印迹
■(Linguistics)(in transformational grammar) a slot from which an element has been moved by a transformation
(语言学)（转换生成语法中的）语迹
■a procedure to investigate the source of something, such as the place from which a telephone call was made, or the origin of a fault in a computer program
（确定来电话者或计算机程序里确定故障源的）跟踪
a very small quantity, especially one too small to be accurately measured
微量，少许（尤指太少无法精确量算）
his body contained traces of amphetamines.
他身体里有微量安非他明。
[as modifier]trace quantities of PCBs.
微量多氯化联苯。
■a slight indication or barely discernible hint of something
丝毫；勉强可以发现的痕迹
just a trace of a smile.
仅是一丝微笑。
a line or pattern displayed by an instrument using a moving pen or a luminous spot on a screen to show the existence or nature of something which is being investigated
描记线，描记图
■a line which represents the projection of a curve or surface on a plane or the intersection of a curve or surface with a plane
交线，迹线，轨迹
(Mathematics)the sum of the elements in the principle diagonal of a square matrix
(数)迹

派生
traceability
noun
traceable
adjective
traceless
adjective
语源

Middle English (first recorded as a noun in the sense 'path that someone or something takes'): from Old French trace (noun), tracier (verb), based on Latin tractus (see tract)

trace²
noun

each of the two side straps, chains, or ropes by which a horse is attached to a vehicle that it is pulling
挽绳，缰绳

常用词组
kick over the traces

become insubordinate or reckless
挣脱羁绊，变得不服从，鲁莽

语源

Middle English (denoting a pair of traces): from Old French trais, plural of trait (see trait)

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