If we look back at our ancestors, we'll see that they had a lot more hair on their bodies than we do now.
如果我们回过头看看我们的祖先，我们会发现他们身上的毛发比我们现在多得多。
But when we look back, it's too late.
但是，当我们回头看，这是为时已晚。
On today's program, we look back at some of them.
在今天的节目中，我们将会回顾其中一些经济意外。
When we look back now, will our jokes still be funny?
当我们回顾今天是否我们的玩笑仍然有趣？
We look back on obstacles avoided and dangers overcome.
我们看到以往的障碍已被避免，危险被克服。
When we look back, we can see the poor and weak in the past years.
当我们回首往事，可以看到过去的贫穷和软弱。
If we look back, we realize the tremendous changes liberation has made.
如果回顾过去，我们就体会到解放带来的巨大变化。
Well, if we look back at the code here, take a look at what we're really doing.
好的，如果我们回过头来看代码，看看我们到底做了什么。
As we look back on the month we spent there, our hearts are filled with gratitude.
回想起我们在那里度过的一个月，我们心中充满感激之情。
Hold on, this could get nostalgic, As we look back and see that friendship is magic.
挺住，(不要伤感)当我们回顾友谊，明白友谊就是魔法时，怀旧的心情来袭。
You may ask why we look back over such a long period to measure average rates of return.
你也许会问为什么我们要往回看这么长一个期间来衡量平均回报率。
"When we look back at old photos we have no idea of what these people were really like," Sydie says.
当我们回头看老照片时，我们不知道那些人到底是什么样。
I do believe that there will be a time when we look back and say, 'Oh yeah, that was the plastic age.
我相信当我们回过头来看这段历史时，我们肯定会说，哦，是呀，那就是曾经的塑料时代。
When we look back at today's fashion statements in time to come, chances are, they will look just as tacky.
当我们以后再回首今日的时尚评论时，它们很可能也显得同样俗气。
The stressful and difficult moments often become memories that we look back on later with laughter and joy.
当我们回首时，我们会对那些充满压力和困难的过往时刻报以微笑，心生喜悦。
At the time, we don't always understand why things are happening, but when we look back, we know it was providence.
在当时我们总是不明白有些事情为什么会发生，但是过后当你回想起来，我们会知道那是天意。
In the first chapter, we look back on and discuss the history and study methods on the study of Chinese cognate words.
第一章对汉语同源词研究的历史和方法作了简要的回顾和评述。
Ironic because, when we look back at those men, they were quite a bit softer and less physically imposing than we think!
讽刺意味是因为当我们回顾那些人的时候，他们是相当柔和的，并没有我们所想的那样强壮！
When we look back through history, we can see that a lot of different stories all turn out to be stories about information.
回顾历史，我们能发现很多不同的故事最后被证明都是关于信息的故事。
We look back on the detours encountered and lessens to be drawn in the research leading to the discovery of nuclear fission.
回顾了原子核裂变发现走过的一段弯路，讨论了这段历史提供的启发和教训。
On the 80th anniversary of the biggest financial disaster of the 20th century, we look back at the events of the Wall Street crash.
时值华尔街股市大崩溃这个20世纪最严重的金融灾难80周年之际，让我们简单回顾一下那次股市大崩溃的经过。
As we look back over the progress of the trip, we can chart the iterations (both planned and actual) as shown in Figures 2 and 3.
随着我们回头审视旅行的进度，我们可以绘制出如图2和3中所示的迭代(计划的和实际的)。
Livio: when we look back in time, using Hubble, we can see the universe, how it looked when it was less than a billion years old.
里维奥：我们用哈勃望远镜回顾过去，能看到宇宙在差不多十亿年前的样子。
The first ten years of the 21st century may go down as the Agile decade when we look back at the progress of software development.
当我们回忆软件开发的进程，在21世纪的头10年间，可能是Agile时代。
Two generations have gone by since the last real steel barons led the world in production and we look back on those days with nostalgia.
在过去两个时代，我们的钢铁制造领先世界，这些回忆令人怀旧。
When we look back at the analysis of the statistics of babies born in water it proves that these inhibitory factors are more than theories.
当我们回过头来看看在水中出生的婴儿的统计分析，这些抑制因素比理论上的要多。
We search the universe looking for signs of water and when we look back at our planet, we are small and pale, yes, but we're dazzlingly blue.
我们探索宇宙来寻找水的迹象，但当我们回望地球的时候，发现她又小又暗，但是确闪耀着蓝色。
I think when we look back and can quantify it, we'll see it's pretty valuable to tell your network you are validating a viewpoint on something.
所以当我们回过头去对之进行评测，我们会看到告诉你的网友你在为某个观点努力这种价值是多么的重要。
I think when we look back and can quantify it, we'll see it's pretty valuable to tell your network you are validating a viewpoint on something.
所以当我们回过头去对之进行评测，我们会看到告诉你的网友你在为某个观点努力这种价值是多么的重要。
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