In other words, if we cannot look back upon history and learn from the mistakes made by those who came before us (including ourselves), then there is little chance of improvement.

换句话说，如果我们不能回顾历史，从过去的错误(包括我们自己过去的经验)中吸取教训，就没有机会做出改进。

youdao

He has a happy childhood to look back upon.

他有一个幸福的童年可以回忆。

youdao

As I look back upon those years, I am struck by Annie's wisdom.

当我回顾过去那些岁月时，安妮的智慧使我惊叹不已。

youdao

For the answer, I look back upon the philosophy by which my mother, Mieke Frankenberg, led her life, through both its brightest and darkest hours.

CNN: With an open heart, giving is receiving

Yet, even as they look down on new immigrants, many Americans look back fondly upon their immigrant ancestors.

CNN: Commentary: Immigrants melting into the pot as usual

But just because 2005 is gone and done doesn't mean we can't take a moment to look back and reflect upon all the best gadgets and consumer electronics-related accomplishments (and blunders) of the year.

ENGADGET: The 2005 Engadget Awards