It's very difficult to remember. 有点难记得。 Which loosely translates into actually saying that all the books of knowledge that you might read 大致翻译一下，意思是说你从书里汲取知识之精华， and then go ahead and impart your know

President Obama and British Prime Minister David Cameron settle a World Cup bet and speak to the media after meeting at the G20 Summit in Toronto, Canada. 【Transcript】 PRESIDENT OBAMA: All right, ever

We will build our defenses beyond challenge, lest weakness invite challenge. 我们要防患于未然，懈怠会带来麻烦。 We will confront weapons of mass destruction, so that a new century is spared new horrors. 我们还要阻止武器泛滥，使新的

And for now we were talking about the future of technology 我们于是开始谈论未来技术 It was going to the cloud and it was going mobile and it was going to have social networks 我们讲到云 讲到移动性 讲到社交网络 And 1 trillion sen

Another moon, very similar, is Europa. 另一个非常相似的卫星，木卫二。 Galileo visited Jupiter's system in 1996 and made fabulous observations of Europa. 伽利略号在1996年时探访了木星系统，对木卫二进行了详细的观察。 Europa, we also know, has an