Sentence examples for challenge is the difficulty of from inspiring English sources

Another challenge is the difficulty of distinguishing between lawful combatants and civilian noncombatants.

A typical challenge is the difficulty of finding programmers overseas who can go beyond following well-known procedures to the next steps of identifying problems and creating new solutions.

The second challenge is the difficulty of molding PVA-C phantoms.

A further challenge is the difficulty of directly assessing bone microvasculature in healthy subjects.

One challenge is the difficulty of designing a scheme which is complex enough to balance process and output measures, and to include a range of indicators to ensure that the system is not unduly focussed on a few interventions, and yet to be comprehensible to participants.

A second challenge is the difficulty (or impossibility) of contacting the reporter for additional details.

Another common challenge is the difficulty in assessing the heterogeneous staining nature of the MSH6 IHC marker [ 63].

The second challenge is the difficulty in recruiting and retaining sufficient numbers of high quality medical and paramedical clinicians or faculty members to support the development and sustain the growth of robust clinical care centers, medical education programs, or research centers.

Just as challenging is the difficulty in the level of standardization required for large datasets and multicenter studies typical of large clinical trials [ 89].

One major challenge, however, is the difficulty of identifying refugees and establishing their population size in these urban areas.

Another challenge of cyberwar is the difficulty of distinguishing between lawful combatants and civilian noncombatants.