So a lot has to trace back to the mother's thoughts.

很多事情可以追踪到母亲的思想。

youdao

But the electrical brain activations detected with ERPs are harder to trace back to their exact origins inside the brain.

但是通过ERP监测脑的电激活比精确追溯它们脑内的起源要困难。

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It has great significance to trace back to the questing and inquiring of western traditional philosophy of substance at present age.

在当代，追溯西方传统哲学对实体的追问和探究，具有重要的意义。

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Arthur Conan Doyle,creator of the fictional detective Sherlock Holmes, wrote about Poe's influence on other crime writers: "Each may find some little development of his own, but his main art must trace back to those admirable stories of Monsieur Dupin,so wonderful in their masterful force, their reticence,their quick dramatic point."

VOA: special.2009.02.02

In Northern Ireland there is a system that allows you to trace back to the farm and even when the produce was harvested, Elliott says.

BBC: Horsemeat scandal: How often does food fraud happen?

Another difference: After being dogged by privacy advocates, Google now anonymizes search results -- making them difficult, if not impossible, to trace back to an individual user -- after nine months.

CNN: IBM worries iPhone's Siri has loose lips

The authorities are now looking for anything that might have been part of the explosive devices - bits of metal or sharp objects that they might be able to trace back to its owner or owners.

BBC: Forensics investigators decode the Boston bombings