Sentence examples for are difficult to track from inspiring English sources

These things are difficult to track.

"Out-of-service subway pay phones are difficult to track and repair," he said.

The elusive spam vans are part of the problem: they are difficult to track and profitable to operate.

Rankings and methodology are difficult to track before 1913, but the most authoritative world rankings since then have always included at least one American in the top 10.

While results are difficult to track, some environmental groups acknowledge that Mr. Clarke's work had an appreciable impact on the Justice properties.

Sales of both traditional and electronic cards are difficult to track, but greeting card companies and trade groups say that traditional cards are still going strong.

It's difficult to track.

His language can be difficult to track.

Exposure by banks to weaker euro-zone nations is difficult to track.

Still, he acknowledged that in the border marketplace, money could be difficult to track.

Derek Jeter said Shields had improved, mentioning his cutter and a changeup that is difficult to track.