Sentence examples for it is often extremely difficult from inspiring English sources

That it is often extremely difficult to match up printing ink with crayon does not bother him.

The tricky thing with inherent bias is that it is often extremely difficult to overcome, even when you are completely aware of it.

"Once these weapons are outside of government control, it is often extremely difficult to track their movement and control who has access to them," said Matthew Schroeder, an analyst who studies missile proliferation at the Federation of American Scientists in Washington.

It is often extremely difficult to decide whether the affected bone segment has to be resected, or whether bone continuity can be preserved.

It is often extremely difficult for a victim to successfully prosecute his or her rapist unless law enforcement processes the materials in the kit.

It is often extremely difficult to achieve a complete histopathological analysis of OSE.

As such, it's often "extremely difficult" to decide where to take the measurements from.

All agreed, however, that it was often extremely difficult to reliably identify counterfeit products, and all but impossible to identify incorrectly stored ones.

Putting other people's needs before your own is usually worth it in the end, but it's often extremely difficult to act in someone else's interest when you have your own needs to attend to.

It is best to pre-empt systematic errors, as correcting them after data have been collected is often extremely difficult and resource intensive.

Determining the exact cause of a stillbirth is often extremely difficult.