Sentence examples for had long proved from inspiring English sources
His instinct for survival had long proved remarkable.
There were prints, though Leonardo's cumulative portrait, gradually painted over several years, had long proved extremely hard to copy as an engraving.
He says relations with Mr Nasheed (who has a reputation for unpredictability) had long proved too strained for the coalition to hold.India, in turn, looks ready to accept a fait accompli.
Excerpt: [Lindbergh's] acumen regarding rockets had long proved prescient.
Virtual assistants had long proved a kind of siren song to an entire crew of Silicon Valley dreamers that wound up shipwrecked in pursuit of a more human, intelligent and helpful HAL.
Drug resistance had long proven a problem in targeting carcinoma cells directly.
Bach has long proved irresistible to artists drawn to reconstructing his music through a contemporary prism.
Stan Lee has long proved his superhuman ability to churn out comic characters.
But understanding it, from a scientific standpoint, has long proved elusive.
