Before the 1970s, the dominance of the state had undergone three distinct challenges.

Here there's a distinct challenge, but with challenge comes opportunity.

Creating a cohesive alien culture can be a distinct challenge.

The size of the Harvard endowment produces distinct challenges, she noted.

Mr. Lee will face a distinct challenge in harnessing all of the warring groups.

The use of each type of qubit poses its own distinct challenges in the laboratory.

Even against such an impressive backdrop, the 49ers offer a distinct challenge.

But there will be some distinct challenges.

All told, it makes for a massive data set with distinct challenges but plenty of opportunities.

These novels also presented critics with a distinct challenge.