Sentence examples for vigorous and difficult from inspiring English sources

In the case of chain-growth reactions, which are generally exothermic, the heat evolved may cause the reaction to become too vigorous and difficult to control unless efficient cooling coils are installed in the reaction vessel.

Similarly, lambs from a prolonged and difficult birth were significantly less vigorous after birth, as they had taken more time to stand, reach the udder and to suck successfully.

Too much time and ink have been spent talking about how challenging, rigorous and difficult Elliott Carter's music is, and not nearly enough on how lively, vigorous and even funny it can be.

29 Perhaps an intervention that focused only on vigorous physical activity might be more effective, although we suspect that this would be less acceptable to participants and difficult or even impossible to sustain.

He was a tireless clinical psychopharmacologist, never daunted by the most complex and difficult psychiatric disorders, and always freely available to his many grateful patients for psychologic support and vigorous pharmacologic treatment.

"The voice is vigorous and forthright".

But these were vigorous and green.

The picture is vigorous — and sinister.

The exposition was bold, vigorous, and lofty.

Everything was vigorous and serious.

That sounds vigorous and categorical.