Sentence examples for has proved particularly difficult from inspiring English sources
Crowd-sourcing has proved particularly difficult.
Efficient linguistic behaviour has proved particularly difficult to produce in a machine.
The New York market has proved particularly difficult for festival producers, who cite high costs and competition with the city's rich cultural calendar as obstacles to establishing a successful event.
MOSCOW — Among the loose ends left after Prime Minister Vladimir V. Putin's visit to Paris was one that has proved particularly difficult to ignore: the 23,700-ton French warship that docked in the middle of St . Petersburgthis week as part of an extended sales pitch to the Russian government.
Controlling the amount of this gas in air has proved particularly difficult for the UK.
The second reason is that insulating government spending from volatile revenue has proved particularly difficult.
Unraveling the Mahdi Army has proven particularly difficult, in part because of the elaborate web of patronage and tribal systems that crisscrosses the closely knit neighborhood of Sadr City.
Only few genes in the biosynthetic pathway of camalexin remain unidentified, however, investigation of candidate genes for these steps has proven particularly difficult partly because of redundancy in the genome of Arabidopsis.
Although obtaining good estimates of the incubation period has proven particularly difficult [ 9], it will be critical to uncovering the extent to which the exposed category of individuals influences the epidemiology of CDI.
