Sentence examples for extremely difficult to trace from inspiring English sources

Decorations based on Chinese literary sources are usually extremely difficult to trace to their origin.

While arachnid fossils are abundant, it is extremely difficult to trace the evolution of individual groups.

Tor provides a way of publishing information so that it's extremely difficult to trace content to a particular internet address.

Because Bitcoin payments are, much like communications on Tor, extremely difficult to trace, they are ideal for online drug-deals.

It is extremely difficult to trace them through such complex and compact tissue, and over such long distances, using traditional neuroanatomical methods.

Virtual currencies are often linked to the purchase of illegal items, namely drugs, thanks to transactions being extremely difficult to trace.

These viruses prey on hosts from all major eukaryotic supergroups and are extremely diverse both genetically and structurally, making it difficult to trace their origins.

"It wasn't hard, it was extremely difficult to take.

The origins of mulled wine are not difficult to trace.

The origins of Jainism are somewhat difficult to trace.

Senator John McCain's family tree proved more difficult to trace.