When I look back to the past three years, many beautiful memories rush to my mind.

当我回顾过去的三年，许多美好的回忆涌入脑海。

youdao

When I look back, I think it was the year when I discovered the person I was going to be.

当我回首往事时，我想正是在那一年，我认识到了自己将会成为什么样的人。

youdao

Now, at the age of 46, I look back on those dreams and smile.

现在，46岁的我回看那些梦想会觉得好笑。

youdao

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

I look back there and I'm just seeing that sign that says 'exit'.

我回顾过去，只看到了某事物存在的标志。

耶鲁公开课 - 文学理论导论课程节选

And I want to just highlight it for you because we're going to come back and look at it.

我想强调下这一点因为我们即将,回过头去再去看看这些东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

As I look back on these initiatives, I note that at least half have failed.

FORBES: Barnacles, Diamonds and Cows: 5 Startup Failures--My 5 Lessons Learned

But, now that I look back, his actions clearly fall into a classic seduce-isolate-abuse-repeat pattern.

FORBES: How My Abusive Marriage Left Me $100,000 In Debt

When I look back, I realize I had a lot to offer even as a college student.

FORBES: Two Pieces Of Advice That Changed My Entrepreneurial Life