现代科技的飞速发展，对体育产生了前所未有的影响。
The rapid development of modern science and technology of sports have had an unprecedented impact.
在过去的几年中，中国的电子商务正以前所未有的速度迅猛发展着。
During the past years, E-business has got unprecedented swift development in China.
上述的发展趋势给我国建筑业带来了前所未有的机遇和挑战。
Above development tendency brings unprecedented opportunity and challenge of construction industry of our country.
上述的发展趋势给我国建筑业带来了前所未有的机遇和挑战。
Above development tendency brings unprecedented opportunity and challenge of construction industry of our country.
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