in retrospect 回想起来，事后看来 It was, in retrospect, one of the worst mistakes I ever made. 回想起来，这是我一生中所犯的最严重的错误之一。 It seemed a good idea when we started six months ago, but in retrospect I can see that we should never have agreed to do it. 咱们6个月前开始干的时候这好像是个挺不错的主意，但是事后看来，我认为咱们根本不该同意这么干。 There are some things that you only become totally conscious of in retrospect. 有些事情的含义你只有在事后回想时才能完全意识到。