Sentence examples for role can be difficult from inspiring English sources

They are commonly found in healthy persons, therefore, their pathogenic role can be difficult to prove in a small population of individuals.

But adjustment to less specialized gender roles can be difficult, especially for men and women bruised by economic stress.

However, behavioral confirmation (which requires the ability to play multiple roles) can be difficult to achieve in the face of age-related physical limitations.

These roles can be difficult to define because the function of an individual transporter may be masked, for example, due to coexpression with other transport systems, low level of expression, or limited expression in a sub-population of cells within a mixed tissue.

This part can be difficult for beginners.

In real life, though, finding someone who can play the role convincingly can be difficult.

Stephanie Zacharek of Salon.com noted in her review for the film that Cruz "doesn't coast on her beauty in Broken Embraces, and she has the kind of role that can be difficult to flesh out".

Even if a decline in a wildlife population is detected and documented, the role of disease can be difficult to tease from an array of complex ecologic relationships.

Staying in the present, focused on the role relevant to the moment, can be difficult if you're juggling roles.

Sometimes, facing up to my role in whatever went wrong can be difficult.

Separating the role of each lobe of CaMWT can be difficult, as each target peptide interacts with CaM differently.