White added that it would also be difficult to ascertain the precise details of a helicopter's intended flight path.
It is difficult to ascertain the color of anal cancer, but I believe it is purple/green.
It was difficult to ascertain the precise toll in Jos, the scene of frequent religious violence over the past decade.
Uncertainties in the solution model and its input parameters make it difficult to ascertain the performance of an engineering system.
The Kochs continued to disperse their money, creating slippery organizations with generic-sounding names, and this made it difficult to ascertain the extent of their influence in Washington.
As the UAEG does not break down remittance statistics by country, it is difficult to ascertain the total value of funds transferred.
As mentioned in the Methods section, this makes it difficult to ascertain the accuracy of the values for all countries and years.
Given that Mueller didn't conclude there was a crime, he has apparently determined that it's more difficult to ascertain the former.
Secondly, the import and political sensitivity of these issues oblige the ECJ to adopt a pragmatic approach that makes difficult to ascertain the precedential value of its pronouncements.
It was difficult to ascertain the fates of the dead men, who were lying on gurneys nested by maggots in a hospital room and the morgue.
But in a conflict in which momentum swings wildly and progress is difficult to ascertain, the rebels have yet to land a knockout blow.
