Two world wars and a Great Depression rocked the confidence of many people that scientific expertise alone could create a prosperous and ordered world.

两次世界大战和一次经济大萧条动摇了许多人的信心——他们原本以为，单凭科学知识就可以创造一个繁荣有序的世界。

youdao

For even as we celebrate tonight, we know the challenges that tomorrow will bring are the greatest of our lifetime - two wars, a planet in peril, the worst financial crisis in a century.

即便我们今晚在此庆祝，我们也知道明天的挑战是前所未有的——两场战争、一个奄奄一息的星球、和一场百年不遇的经济危机。

youdao

For even as we celebrate tonight, we know the challenges that tomorrow will bring are the greatest of our lifetime — two wars, a planet in peril, the worst financial crisis in a century.

因为即便我们今晚欢呼庆祝，我们也知道明天将面临我们一生之中最为艰巨的挑战——两场战争、一个面临危险的星球，还有百年来最严重的金融危机。

youdao

"At a time when we're fighting two wars and facing a serious deficit, this would have been an inexcusable waste of money.

VOA: standard.2009.07.21

The two countries have fought several wars since independence. The latest arrests come as a trial continues for the lone surviving suspect in last November's terror attacks on India's commercial capital,Mumbai.

VOA: standard.2009.08.07

(Choral music) The two European leaders listened to a French army choir sang the Marseillaise and then the German anthem, marking a French-German friendship that grew from the ashes of the two world wars.

VOA: standard.2009.11.11

But none of this necessarily means that thinking has changed enough to keep talks going once started, let alone to produce a settlement to a dispute that has brought about two wars and a 12-year insurgency involving some 35, 000 deaths.

ECONOMIST: Cooling it in Kashmir

People might wonder when they see a black-tie dinner and what -- from everything I hear, what will be a lovely evening in the tent on the South Lawn -- what the role of having a party like that is, given that some people might say there is two wars and a lot of joblessness going on in the country.

WHITEHOUSE: Press Briefing

We paid for two wars with a credit card -- debt that you're going to have to pay off.

WHITEHOUSE: President Obama Speaks on College Affordability