Sentence examples for difficult concept from inspiring English sources

It's a very difficult concept.

Balance is a difficult concept for Galliano.

It is not a difficult concept.

It's a difficult concept to grasp.

Old age is a difficult concept for a perpetual adolescent.

Again, initially I found this a difficult concept to grasp.

It's such a difficult concept to get your head around.

For some, that is a difficult concept to grasp.

"The whole idea of research is a difficult concept.

The hollow bent shape of the fortune cookie seems to be a difficult concept to grasp.

To have people die preventing a disease that doesn't exist is a difficult concept.