Sentence examples for historic difficulty from inspiring English sources

That, of course, takes one back to the historic difficulty the Senate has in doing things quickly.

Ryan defined "default" as only the failure to make a bond payment, and said his bill -- which passed the committee on a party-line vote of 24 to 15 -- was a sensible backstop, given Congress' historic difficulty with increasing the debt limit.

Given the historic difficulty in developing analytical methods for treating mutation/selection balance in changing environments, we chose instead to employ a computational approach.

Because of the historic difficulty of distinguishing neoplastic and non-neoplastic forms of C-cell hyperplasia in both rodents and humans, the diagnostic significance of C-cell hyperplasia is unclear.

Conversely, traits such as fat thickness, docility, and heifer pregnancy rate have not been as intensely selected as growth traits, due to the differing breeding objectives of beef producers, genetic antagonisms constraining selection response, and the historic difficulty in collecting field data to allow the development of EPDs for these traits.

Cameron – who once said his priorities could be summed up in the three letters "NHS" – initially invested a great deal of effort in overcoming the Conservatives' historic difficulties on the terrain of health.

In retrospect, this finding may account for historic difficulties in obtaining pure mouse HSC populations and the low yields accompanying more promising approaches.

Their results indicate that the historic difficulties in classifying these ferns have been due to a combination of evolutionary stasis, with disparate groups appearing to be closely related due to shared ancestral morphologies, and evolutionary convergence, with the repeated evolution of similar features.

However, historic and continuing difficulties in purifying, maintaining and/or expanding tissue-specific stem cells in vitro has hampered development of novel therapeutic approaches using these cells.

Please, let this historic March proceed without difficulties!

Despite the inherent difficulty in characterizing historic diets in evolutionary studies, there is evidence supporting recent and continuous diet-driven selection in humans (58).