retrospect

事後看來、回想起來、回顧起來in retrospect

In retrospect, I should have asked more questions before signing.

事後看來，我簽約前應該多問幾個問題。

回顧、追憶、回溯

The whole trip seems much funnier in the retrospect of years.

多年後回顧，那趟旅程顯得有趣多了。

回顧、追憶正式，罕用

The author retrospects her childhood in the opening chapter.

作者在第一章回顧了自己的童年。