retro-,向后，往回，-spect,看，词源同 respect,spectator.

1. The debate seems, in retrospect, to have been fixed from the beginning.

回想起来，这场辩论好像从一开始就被人操纵了。

2. It was , in retrospect, the happiest day of her life.

回想起来, 那是她一生最幸福的日子.

3. In retrospect it's obvious how we went wrong.

回想起来,我们是如何出的错就很明显了.

4. The retrospect was depressing.

回想起来令人沮丧.

5. It was a very strange feeling in retrospect — I was frightened, but excited at the same time.

回想起来那是一种非常奇怪的感觉——我当时既害怕又兴奋。