Sentence examples for is frequently difficult to from inspiring English sources

Because of this, it is frequently difficult to be definitive about biographical information.

It is frequently difficult to follow the events, to share the fears, to feel the despair.

It is frequently difficult to distinguish the work of the various family members.

It is frequently difficult to distinguish between an English glass and an imported European one, although a certain coarseness may be taken as symptomatic of English make.

While identity theft is a crime, it is often committed across geographic boundaries, and it is frequently difficult to clearly identify someone as the thief.

In online role-playing communities, it is frequently difficult to identify the players behind the other characters, or whether characters in two different games are played by the same person.

The health effects of meth contamination are frequently difficult to prove, and research is scant.

Critical to this are highly aligned fibers, which are frequently difficult to manufacture reproducibly.

However, they are frequently difficult to express recombinantly and can suffer from low conformational stability.

Wounds of the lower limb in patients with diabetes are frequently difficult to heal.

After 1460 the two collaborated consistently, and the individual contributions of each are frequently difficult to determine.