Sentence examples for a very difficult thing from inspiring English sources

It's a very difficult thing to enforce".

Calibration is a VERY difficult thing.

A very difficult thing to do.

"That's a very difficult thing to do".

"It was a very difficult thing," Shimomura reminisced.

This is a very difficult thing for historians to understand.

That's politically a very difficult thing to do.

It is a very difficult thing to do".

"But that's a very difficult thing to do.

It was a very difficult thing to accept his downfall.

"For darts players, that's a very difficult thing to do.