Sentence examples for difficult to trace back from inspiring English sources

Currently when a drone is captured it is difficult to trace back to an owner.

And they always operate in ways that make it very difficult to trace back to them.

A major challenge with sustainable procurement is that palm oil from different sources tends to get mixed together, making it difficult to trace back to the plantation.

He also warned of the threat of anonymous war, where terrorists or criminals could launch drone attacks which would be difficult to trace back.

The biomarker pattern of the sulfide-oxidizing bacteria is not very specific (mono-unsaturated n-C16 and n-C18 fatty acids are dominant) and, as such, it is difficult to trace back their presence in ancient sediments [11,12].

His father left no documentation about the payday loans in his records, the family said, which made the withdrawals not only surprising, but difficult to trace back to creditors who needed to be notified of his death.

"It's very hard to trace back".

Both actions make it difficult today to trace back the origin of miRNA genes.

Secondly, many of our data were extracted from studies written in Chinese, which makes it difficult for non-Chinese reviewers, editors, and readers to trace back to the original materials.

That's no reflection on their capabilities of course, but rather, suggestive that lion meat is part of a system in which it seems to be worryingly difficult to trace things back.

Some of Mr. Green's accomplishments -- or issues that he says he initiated -- are difficult to trace solely back to him because, though he presides over the City Council, he does not have the authority to vote on specific pieces of legislation except to break a tie, which he has never had to do.