Cheap energy, specifically cheap oil, quite literally fueled this record economic expansion . 廉价的能源，特别是廉价的石油，确实促成了空前的经济高涨。
Science and technology have come to pervade every aspect of our lives and , as a result , society is changing at a speed which is quite unprecedented . 科学和技术已经开始渗透了我们生活的各个领域；结果，社会正以空前的速度改变着。
We have been assailed by pressures arising out of the unprecedented global recession and the resultant extremely unfavourable trade and aid environment . 空前的全球性经济衰退以及由此而产生的贸易和援助方面极端不利的局面给我们带来了压力。
B : of course , it was an unprecedented mission 当然有，这可是一项空前的任务呢。
The farmers got the biggest crop ever this year 今年农民取得了空前的大丰收。
Of course , it was an unprecedented mission 当然有，这可是一项空前的任务呢。
Expenditure raced up to an unprecedented level 开支剧增，达到空前的水平。
Itself , resulting in unparalled speed and size of updates ,更新速度和大小都是空前的
Itself , resulting in unparalleled speed and size of updates 更新速度和大小都是空前的
For a massive international peace conference 一个盛况空前的国际和平会议
