•The police are trying to trace the mother of a newborn baby found abandoned outside a hospital.员警试图查出那位把新生婴儿抛弃在医院外面的母亲。

•Attempts to trace the whereabouts of a man seen leaving the scene of the crime have so far been unsuccessful.有人曾看到一名男子离开犯罪现场，但迄今为止，尚未成功追查到该名男子。

•Their missing daughter was finally traced to (= found in) Manchester.他们失踪的女儿最终在曼彻斯特找到了。

•The phone company were unable to trace the call.电话公司查不出这个电话来自何处。

•No one has yet been able to trace the source of the rumour.还没有人能够查出谣言从何而来。

•The outbreak of food poisoning was traced to some contaminated shellfish.经调查，这次食物中毒源于一些受污染的贝类。

•The practice of giving eggs at Easter can be traced back to festivals in ancient China.复活节送彩蛋的习俗可追溯至中国古代的节庆活动。

•Rivalries between the gangs can be traced back to (= first happened in) the 1950s in some black and Hispanic neighbourhoods.这些帮派之间的争斗可以追溯至20世纪50年代在一些黑人和西班牙族裔人口居住区发生的冲突。

•The film traces the events leading up to the Russian Revolution in 1917.该影片描述了导致1917年俄国革命爆发的一系列事件。

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•Did you draw this picture yourself, or did you trace it?这幅画是你自己画的，还是你描摹的？

•She learnt to write her name by tracing out the letters.她透过描摹字母学会了写自己的名字。

•The child was tracing patterns in/on the sand with a stick.孩子用棍子在沙子上勾画出一个个图案。

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•He attempted to cover up all the traces of his crime.他试图掩盖他犯罪的痕迹。

•When she moved out, she left no trace of having been there.她搬走后，没有留下任何在那里逗留过的痕迹。

•My wallet has been missing for several days and I can't find any trace of it.我的钱包不见好几天了，而我就是找不到它。

•He seems to have vanished without (a) trace (= No one knows where he is).他似乎已经消失得无影无踪。

•The phone company put a trace on the call.电话公司用电子仪器追踪这次通话。

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•Traces of drugs were found in his blood.在他的血液中发现少许毒品。

•There is just a trace of grey in his hair.他头发中夹杂着少许白发。

•She speaks English without the slightest trace of an accent.她讲英语丝毫不带口音。

•There was the faintest trace of a smile on her lips.她的唇边带着一丝微笑。

•"How wonderful!" she said, without any trace of sarcasm.“多好啊！”她说道，语气中丝毫没有挖苦。