Sentence examples for A key difficulty is from inspiring English sources

A key difficulty is the detection of a contribution arising from an extremely narrow region, since the DW width typically extends only over a few atomic cells.

A key difficulty is that Mei Xiang places herself in what he called "pancake position" — flat on her stomach, legs outstretched — and Tian Tian isn't assertive enough to lift her off the ground.

A key difficulty is that stakeholders typically convey their goals indirectly through intuitive narrative-style scenarios of desirable and undesirable system behaviour, whereas goal refinement methods usually require goals to be expressed declaratively using, for instance, a temporal logic.

A key difficulty is that this plot is so predetermined there is little point in seeing it through to the end.

A key difficulty is the migration of Irish trained doctors once they have qualified or completed their pre-registration (intern) year.

However, a key difficulty is that we can only observe three types of reference components due to the limitation of staining and imaging techniques.

Dyke said a key difficulty was that most observers believed that the BBC Trust would cease to exist, or at least be radically overhauled, as part of charter renewal in 2016.

The key difficulty is that cancer is a complex and heterogeneous disease: many genes are amplified, deleted, mutated, and up- or down-regulated.

The key difficulty is that operating in everyday listening conditions entails processing a speech signal that is reverberantly mixed into a noise background composed of multiple competing sound sources.

One key difficulty is the availability of broadcasting spectrum to make local or city TV a reality, since mobile operators are expected to take precedence in an auction of transmission frequencies freed up by digital switchover.

The key difficulty is how to model and handle the inter-cell interference.