How far back can you trace your family tree?

你的家谱可以追溯到多少代？

《牛津词典》

Can one trace this same pattern far back in prehistory?

我们能把同样的这种模式追溯到遥远的史前吗？

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WiggleZ scientists have made a 3-D map of more than 150,000 galaxies near and far to trace the universe's evolution over time. [Chris Blake et al.

该项目科学家制作了一个包括不同距离超过150,000星系的三维天图，来追溯宇宙的演化过程。

youdao

And I sent home a questionnaire, asking their parents because most of the children in the class come from other countries. In fact, just about everybody in America comes from another country if you trace far enough.

我还给家长们发了一张问卷，因为班上,大部分学生来自,其它国家，事实上，如果追根溯源，任何一个美国都来自,其它国家。

麻省理工公开课 - 媒体、教育、市场课程节选

Offenders were far harder to trace than ever before, he added, since they were now communicating through the internet and social media, rather than by phone, and sometimes leaving "no footprint".

BBC: Computer keyboard and mouse

While police have so far found no trace of Ms Rushworth, who disappeared in June 2009, body parts belonging to the other two women have been found in the River Aire in Bradford.

BBC: Vigil for Bradford deaths women

These devices mimic the human nose and human tongue but have far greater sensitivity to trace scents and flavors.

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