At first this mark was used to track the origin of faulty items.

起初，这道标记被用来追踪不合格物品来源；

youdao

It allows our customers to track their products as they pass along the supply chain, from origin to destination.

它允许我们的客户在产品从发货地到目的地的整个供应链过程中对其进行跟踪。

youdao

Research methods:This paper analyzed the origin, the radiating way, and the controlling method of track vibration, then investigated some track damping structure used at present.

研究方法：对城市轨道交通轨道的振动起源、传播方式及控制措施进行分析研究；调查研究目前常用的几种轨道减振结构等相关资料。

youdao

As you stated, much wood processing is now undertaken in countries from which it is almost impossible to track the honest origin of timber.

ECONOMIST: Conflict of opinion

Unlike newspapers though, which are of unknown origin, each track in Undersound will have a birth-place, giving added meaning.

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Law enforcement agencies are "making advances each day" in their ability to track the calls to their origin, Whitmore said.

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