Sentence examples for posed difficult challenges from inspiring English sources

But each positive step in Mr. Rawlins's recovery has posed difficult challenges for his wife.

Martin Baron, The Herald's executive editor, said yesterday that covering an emotional event in a racially diverse community posed difficult challenges.

Only recently democratic, and with a long history of military rule and ethnic and racial conflict, Mauritania posed difficult challenges for those seeking to involve the public.

In an interview, he said FTR met its obligations even though architectural plans were often vague and energy-conservation features posed difficult challenges.

This poses difficult challenges for mathematical modeling.

In America today, Israel's political realities pose difficult challenges.

But modelling of systems with friction poses difficult challenges.

But the world outside America's borders continues to pose difficult challenges for Washington policy makers.

Continuous innovation will pose difficult challenges for people and governments the world over.

Resource management for large-scale high performance computing systems poses difficult challenges to system administrators.

More to the point, though, poverty poses difficult challenges for education in America, and as poverty figures grow, those challenges stand only to grow more complex.