afterthought
n thing that is thought of or added later 事後想到或添加的事物
Just as an afterthought why not ask Jim? 这是事後想起的--为什么不问问吉姆呢?
The film was made first and the music was added as an afterthought. 这部电影是先拍摄画面的, 音乐是後加上的.
Mary was a bit of an afterthought her brothers and sisters are all much older than her. 玛丽算是後添的--她哥哥姐姐都比她大得多.