The United States must lead the way. But our best chance to solve these unprecedented problems comes from acting in concert with other nations,".

VOA: standard.2009.04.11

But Athens was also something completely unprecedented in the world it was a democracy.

但雅典也是,世界上史无前例的城邦。

耶鲁公开课 - 政治哲学导论课程节选

"In fact,what's remarkable is not that we've had a spirited debate about health insurance reform, but the unprecedented consensus that has come together behind it."

VOA: standard.2009.10.10

The three-party alliance made unprecedented inroads in the 2008 general elections but those gains were also attributed to widespread anger over the government's handling of problems such as graft and racial inequality.

VOA: standard.2009.12.21

They are steps that are working." Bernanke says the Federal Reserve and other economic policy makers have been challenged by unprecedented events in the past few years, but his objective has not changed.

VOA: standard.2009.08.25

The picturesque town was a popular tourist destination, but the majority of its buildings were crushed by the onslaught of an unprecedented firestorm that advanced with such speed and ferocity and gave many residents little chance of survival.

VOA: standard.2009.03.21