Sentence examples for be the key source from inspiring English sources
Thus, grey and black waters originated from households appear to be the key source of faecal contamination.
But currently 'easily recoverable light oil' has peaked, and remaining 'heavy oil' reserves will be the key source to meet a big demand on energy.
Speaking of games, Super Mario Bros. seems to be the key source material for their latest video, "Ghostbusters".
Thus, microglial-derived IL-1 appears to be the key source responsible for the unique dependence on IL-1 in this model.
The Persian Gulf has two-thirds of the world's proven oil reserves and is the key source of oil exports.
Mark Felt, 91, was the key source in the Washington Post investigation that helped to bring down President Richard Nixon.
People under 35 are the key source of new household formation, the factor that supports the housing market.
But the government has no power to limit EU immigration, which has been the key source of concern in recent years.
W Mark Felt, 91, who was second-in-command at the FBI in the early 1970s, told Vanity Fair magazine he was the key source for the Washington Post reporters whose story brought down the Nixon presidency.
Dr Kelly told the foreign affairs select committee that he did not recognise much of the material in Gilligan's submission and that he could not therefore be sure that he was the key source.
