There was a small challenge in his voice, almost as if the words were directed to Reyn rather than to her.

These items often take the form of (typically) small challenges.

First, there is the small challenge of finding him.

That is no small challenge in places where villagers are lucky to have phone lines and electricity, much less an Internet cafe.

Each adventure has a variety of small challenges to overcome on the road to accomplishing the mission they are given.

What was supposed to be a small challenge has become instead a lesson for the colonel.

Developing this copyright protection turns out to be no small technological challenge.

Or maybe I'll just try to convince him life is worth living-no small challenge with the mostly immortal, let me tell you.

We democrats seek to restore the people's faith in Europe, which is no small challenge.

Keeping ahead of technological reality is no small challenge for Hollywood.