Sentence examples for challenge is hard from inspiring English sources

"This challenge is hard and it's gradually getting harder.

This challenge is hard enough, but we also have to tackle the problem of 1.3bn tonnes of food wasted every year (PDF) – roughly a third of all food produced for human consumption.

But that the challenge is hard is no excuse.

That challenge is hard enough, but several others are just as thorny.

Taking on a brain-teasing challenge "is hard-wired into our nature," said Elonka Dunin, a software game developer who maintains an exhaustive Web site on the Kryptos sculpture and other Sanborn works.

Today's domestic challenge is harder.

The challenge is harder when a prospect is playing outside the major conferences, as Lin did at Harvard.

The challenge is harder in ESRD patients undergoing maintenance dialysis.

The challenge was hard... pic.twitter.com/yCo2lbfF5y.

One UK-based artificial intelligence (AI) researcher said the challenge was harder that it sounded.

This is a dance whose challenges are hard to meet at the end of a program.