The other main difference between the two species is far more difficult to explain.

"It was far more difficult than my experience had led me to believe," he said last week.

It is far more difficult to say than what I have said.

The first is relatively easy to put into practice, the second far more difficult.

But many groups have had a far more difficult time.

Other people found getting to sleep that night far more difficult.

This was going to be far more difficult than he had expected.

To win his bet would be far more difficult than he had thought.

It is far more difficult to include other new products.

The 2000s have been far more difficult for the club.