Sentence examples for difficult to ascertain even from inspiring English sources

The inner workings of the police state were difficult to ascertain even before the current uprising started 15 months ago, and they are even more opaque now.

This is all the more important where terrorism and security are at issue because facts can be difficult to ascertain, even where they pose absolutely no risk to national security.

In addition, many variables (lupus activity, renal disease, low complement, treatment with steroids and immunosuppressive drugs) are intimately related with each other in clinical practice, and thus their relative weight and interactions are difficult to ascertain, even with multivariate analysis.

However, the true copy number of any repeat sequence can be difficult to ascertain, even in very high quality assemblies; this can make comparisons of multiplicity difficult to evaluate.

"It is always very difficult to ascertain complete disarmament," Mr. Fahmy said, "even more so when the rhetoric is high and the suspicions so intense.

In addition, the direction of a possibly causal association between medication overuse and the underlying headache becomes even more difficult to ascertain if the headache is assumed to be secondary to another, defined organic cause.

Non-coding variants are even more difficult to ascertain, and until recently the estimation of their biological impact relied mostly on conservation scores.

Similarly, there are a variety of types of leukemia, each probably with differences in causation, making it even more difficult to ascertain sufficient numbers of homogeneous tumors for study.

The prevalence of eating disorders is difficult to ascertain, since many people may not even be aware that they have an eating disorder, are reluctant to seek medical care or have not been hospitalized.

The Palsars are maneuvering amid a population that overwhelmingly views them as the enemy, and they are finding it increasingly difficult to ascertain whether they are winning -- or even to calculate what "victory" would mean.

But Roper says even reputational damage is difficult to ascertain and can quickly dissipate.