When I look back now from this high hill of my old age, I can still see the dead lying all over the ground.

VOA: special.2010.04.08

If you look back over it, there was no major or minor in western music up until about sixteenth century, and then people started writing these things called madrigals, that were tied to texts.

如果回顾下历史,大家会发现直到十六世纪,西方世界才出现大调和小调,那时人们开始写一种叫做牧歌的曲子,并配上歌词

耶鲁公开课 - 聆听音乐课程节选

The little insects were crawling around, the plants were there. And come back and look at it, over a period of weeks, and see what's changing.

我可以看到昆虫爬来爬去，还看到有些植物，几个星期后，再来看，看看发生了什么变化。

普林斯顿公开课 - 人性课程节选

"If you look back in history you will find that many presidents who were enormously popular in that first year became failed presidents over time.

VOA: special.2010.01.23

OK, and if I wanted to look at it, we can come back over here, and we can see what does c p 1 look like, interesting.

现在对于这里的每个实例，我都赋了x和y值，好，那么如果我想要研究下它,我们可以回到这里来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Some property owners in southern Arizona, look out over Mexico from their back porches.

VOA: standard.2010.06.07

Ruhli,who is a medical doctor as well as a paleo-pathologist, says looking back can help scientists look forward, by revealing how the disease evolved over time.

VOA: standard.2010.05.05