One problem is that the chemistry of these systems is often impossible to characterize.
Hiro Ueki, a spokesman here for the inspectors, said it was impossible to characterize the list until it had been translated and studied.
But the album's mood is impossible to characterize, because there are so many voices and attempts to find a comfortable position.
Almost impossible to characterize in British terms, he has been best described as a Christian Democrat, while his invocation of religion seems less jarring to Americans, who are used to that from their politicians.
More important, while these justices might conceivably have had a slight pecuniary interest, we find it impossible to characterize that interest as " 'direct, personal, substantial, [and] pecuniary.' " Ward, supra, at 60 (quoting Tumey, supra, at 523).
Since 2013, he has probably been known best for LiarTownUSA, a Tumblr blog that has an intensely devoted following but is impossible to characterize succinctly except by saying that Tejaratchi, in addition to being extremely funny, is also a Photoshop virtuoso.
At the same time, however, the report found that data gaps and uncertainties made it impossible to fully characterize the severity of the problem.
This makes it impossible to accurately characterize a system under test.
Since relative molecular weight and retention time are linked in traditional SEC, it is impossible to formally characterize SCNP molecular weight with this technique.
Genome sequencing projects generate data at a rate that makes it impossible to conduct biological experiments to characterize the function of every protein encoded in a genome.
Like poems and dreams and love, it can be maddeningly difficult to characterize — some might say impossible.
