Ask me to look back in 2010 or so.(2010年左右再回头问我这个问题。)
Now, at the age of 46, I look back on those dreams and smile.(现在，46岁的我回首那些梦想，会心一笑。)
They did not once look back.(他们一次也没回头。)
When you are running, look ahead, don't look back.(跑步时往前看，别后瞻。)
Such a rich chapter it had been, when one came to look back on it all!(当一个人回顾这一切的时候，他会发现这是多么丰富多彩的一章啊！)
We asked him how the device can look back in time.(我们向他请教这台设备如何能够看到时光倒流。)
At the end of an iteration of work, we always look back at how we did and figure out what we can do differently next time to improve.(持续的反馈和改进：在重复工作的结束时，我们总是回顾我们是如何做的，并找出下次改进时我们可以做的不同之处。)
Whoever is being looked at, look back.(谁被看着，回看对方。)
Look back on those days when you were the little child, how many times did you try when no one was watching, or when no one was cheering?(回想一下你小时候的那些日子，在没有人观看或没有人欢呼的时候，你试了多少次？)
"Let us not look back," answered Hester Prynne.(“咱们不要回头看了，”海丝特·白兰回答说。)
