Sentence examples for has been difficult to catch from inspiring English sources

They emerged many years behind, and it has been difficult to catch up.

The more timid cats have been difficult to catch.

The NMSZ has been difficult to study.

It had been difficult to find.

Solutions have been difficult to come by.

The Hawks have conceded that it is difficult to catch the masterminds - as only people who do the ground work have been arrested.

Many studies have indicated that it is difficult to catch the autophagic flux without inhibition of lysosomal hydrolases.

Yet only 117 people have caught the virus because it is difficult to catch.

This seriousness may be difficult to catch: Kleinzahler doesn't have a sententious bone in his body.

We used nestlings because they have already started to show morph differences at that age, and because adults are difficult to catch.

It is difficult to catch your own mistakes.