这一警报是由北极地区史无前例的事件所引发的。
纽约市的大型快餐连锁店已经开始遵守史无前例的规定，也就是在菜单上标明卡路里计数。
Big fast-food chains in New York City have started to obey a first of its kind rule, requiring them to post calorie counts right on the menu.
纽约市的大型快餐连锁店迎来了一项史无前例的新规定，这一规定要求他们在菜单上附上卡路里含量表。
Big fast-food chains in New York City have started to obey a first-of-its-kind rule, requiring them to post calorie counts right on the menu.
这种双方同意的分离并非史无前例。
它正在进行的城市化，其规模史无前例。
It is becoming urbanised on a scale unprecedented in history.
也许唯一安全的预计是无前例的人口转移。
Maybe the only safe prediction is for unprecedented population shifts.
这将是史无前例的壮举。
但是，已经全无前几年的乐观情绪。
But it was completely devoid of the optimism of previous years.
人类同样以史无前例的方式来面对这一疾病。
And humanity has faced this disease, in equally unprecedented ways.
墨西哥已经史无前例地引渡大量有嫌疑的毒贩。
Mexico has extradited suspected narcos in unprecedented Numbers.
各国的事务和命运史无前例地纠缠在一起。
The affairs, and fates, of nations are intertwined as never before.
旧房销售量的骤降是严重的但是并不是史无前例的。
The plunge in sales of existing homes is severe but not unprecedented.
达文认为，各州的行动规模之大，都是史无前例的。
Ms Dalven thinks that the scale of the states' actions is unprecedented.
IMF指出，尽管债务水平很高，但是并非史无前例。
The IMF points out that debt levels, while high, are not unprecedented by historical standards.
虽说并非史无前例，但进展到这阶段下达禁令实属罕见。
Gag orders at this stage in the proceedings are rare, though not unprecedented.
他们一往无前，尽管一路担忧，一路布满挑战。
And they have kept moving forward despite their fears and despite any challenges that stood in their way.
重建这些急需的基础设施的实际任务是一个史无前例的挑战。
The actual task of building back this critical infrastructure is a challenge of unprecedented proportions.
首先，很多大学毕业生的负债额是显著的而且是史无前例的。
First, the amount of indebtedness many graduates have is pronounced and unprecedented.
阿克曼先生也史无前例地出现在德国的大小会议上。
Mr. Ackermann also appeared at gatherings in Germany as never before.
美国的房屋市场依然疲软，房价已经史无前例地连续两年下跌。
The U.S. housing sector remains weak, two years into an unprecedented decline.
“过去五到六年间我们见证的是史无前例的财富转移，”他说。
"What we have witnessed over the past five to six years has been nothing short of a historically unprecedented transfer of wealth," he said.
以色列领导人呼吁在无前提条件的情况下迅速恢复和谈。
The Israeli leader called for a swift resumption of talks without preconditions.
所以，一个史无前例的决定出来了——修复飞机，让它重新起飞。
So an unprecedented decision has been made - to restore the plane and make it fly again.
所以，一个史无前例的决定出来了——修复飞机，让它重新起飞。
So, an unprecedented decision has been made - to restore the plane and make it fly again.
至少，保尔森史无前例的行为解除了一个一直可能随时爆炸的危机。
At the very least, Paulson's unprecedented move defuses one ticking time bomb.
专家表示，本周所出现的高温现象虽然不是史无前例，但也相当罕见。
Experts state that the occurrence of the high temperature this week is rather rare, though not unprecedented.
严重急性呼吸道综合征和禽流感等新疾病正在以史无前例的速度出现。
New diseases, like SARS, like avian influenza, are emerging at an historically unprecedented rate.
富国银行发起一场敌意收购，这在当时的银行业可谓史无前例。
Wells Fargo made a hostile bid, which at the time was unheard of in the banking sector.
请求人们为学校捐款并非史无前例，但是通常的做法并不这么大张旗鼓。
The idea of asking people to chip in for schools is not unprecedented, but it is usually a bit more subtle.
请求人们为学校捐款并非史无前例，但是通常的做法并不这么大张旗鼓。
The idea of asking people to chip in for schools is not unprecedented, but it is usually a bit more subtle.
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