At first the Investors had difficulty grasping the concept.

"You seem to have a little difficulty grasping the idea that things change with the passage of time," she continued, dipping one foot into the water.

I shall explain, since you seem to have some difficulty grasping selective aspects of truth.

But it was still something the mind had difficulty grasping, and Ed was having that difficulty now.

Now Xavier had difficulty grasping the enormity of this revelation as well.

Using the example of a balloon being heated results in a larger volume, is very intuitive, and students have no difficulty grasping the concept.

They discuss time travel, which Miranda has difficulty grasping due to her belief that "the end can't happen before the middle".

Eragon had difficulty grasping the scale of the mountain when he gazed upward.

Another person might have had difficulty grasping this, but I was the Magician of Information.

I had difficulty grasping it, my hand was trembling so much.