"I came back from that really shaken up. I started to think about how the oceans are having a hard time.

VOA: standard.2010.08.04

One hour of recitation a week, on Fridays, and we'll come back in a second to how you're going to get set up for that.

周五是每周一小时的复习课，一会儿我们来说,怎么去准备那个课。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now, efficiency is obviously an important consideration when you're designing code, although I have to admit, at least for me, I usually want to at least start initially with code that works, and then worry about how I might go back and come up with more efficient implementation.

现在，当你设计程序的时候效率,是不得不考虑的问题，虽然我必须承认，至少对我来说,我是先担心程序能不能运行,再去把它的效率优化的,我喜欢可靠点的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

And there is lots of advice out there on how to back up and preserve data.

FORBES: Lucretius's Legacy Depended On The Toughness Of Vellum. What Will Save Ours?

I'm not even sure how one would begin to back up this assertion with any hard evidence.

FORBES: Readers Say

Mario Draghi will stand up this afternoon to explain how the European Central Bank's governing council has decided to back up his pledge to "do whatever it takes, within our mandate" to hold the single currency together.

BBC: Waiting for Draghi