But those problems are being gradually overcome, researchers said.
D'Arrast felt gradually overcome by fatigue and breathed with ever greater difficulty.
But excitement, joy gradually overcame what perhaps were the more proper sentiments of the moment.
Curiosity gradually overcame shock; Blake even went closer to check the evidence of his eyes.
These two, both gun-shy about romance, gradually overcome their reservations.
This plan included protecting the country's national border and gradually overcoming difficulties within the country itself.
Technology, however, is gradually overcoming the problems associated with secondhand paper.
She had lived with the sadness, gradually overcoming it, for over a century.
We are gradually overcoming the potential obstacles to a definitive decision on enlargement.
This families survived to many problems, such as diseases, scarcity and lack of communication, which were gradually overcome.