Sentence examples for been a challenge since from inspiring English sources
It has been a challenge since day one.
Knowing who's who on Twitter has been a challenge since the beginning: the basketball great Shaquille O'Neal created his own Twitter feed, with the insistent handle The_Real_Shaq, after someone was pretending to be him.
Providing indoor coverage and capacity has been a challenge since the start of mobile networking.
Representation/predictions of the solubilities of industrial solid compounds in supercritical carbon dioxide have been a challenge since the last two decades.
However, the implementation of this basic approach has been a challenge since many of the mobile social network data involve categorical data values.
Lighting at Le Mans has always been a challenge, since at least six hours of the race happens in total darkness.
"That's a challenge, since the commercial will be seen on analog TV.
It is a challenge, since some audiences, especially in Europe, think that the Buena Vista Social Club represents all of Cuban music.
Jazz and every other musical genre wafted though the warm night air, although finding live events was a challenge, since they are mostly held in pricey indoor venues.
In the early years of the movement, even convening a meeting was a challenge, since so many youths, lacking papers, could not fly or drive without risking deportation.
At the beginning, all she knew about "Half Life" was the story's Victorian setting.. Finding such a place was a challenge, since Ms. Gaskell was six months pregnant and, she said, "not about to fly off to Manderley".
