Sentence examples for is very difficult to track from inspiring English sources

It is very difficult to track poachers here," he said.

"That is why it is very difficult to track these people down," he says, "let alone to collect tax".

It is very difficult to track growth rates of individual fry, so it is unknown to what extent size-dependent growth may modify body sizes of young fish.

Given that these tumors occur spontaneously via transformation of the host's normal cells that do not have specific, imageable cellular tags, it is very difficult to track these cells in vivo during tumor progression and metastasis.

"It's very difficult to track everything down," Sergeant Darcy said.

"It's very difficult to track money," the senior official said.

Last week, Belgium's foreign affairs minister warned that the PlayStation 4 was being increasingly used and was very difficult to track.

Yet in a complex deal, with many lenders and investors, it may be very difficult to track down where all the money comes from, he said.

Significant financing for Spanish mosques comes from Saudi Arabia and Morocco, said a Justice Ministry official, but he added that the money trails were very difficult to track.

The museum paid for the discs, but cannot distribute the music until it has found a way to compensate the estates of the musicians, many of which may be very difficult to track down after all these decades.

With journalists and outside observers mostly prevented from entering the Southern Kordofan and Blue Nile areas of Sudan, it's very difficult to track the developing human rights crisis there.