So the pessimistic view...My read on it is almost as if you're saying that, "you don't want to grow up, you don't want to learn the rules of filmmaking or society. If you can maintain your innocence, you're sort of never die. You'll never have regret."

因此关于悲观主义观点，我的解读是,似乎你在说，你不想成长，你不想学电影的拍摄方法以及社会规则,如果你能够保持纯真，你就用不会逝去，你也不会有遗憾“

麻省理工公开课 - 电影哲学课程节选

When you express regret for something that you should have, should not have done.

当你想表达某种悔意，对某事你本该做，或本不该做，

I should have 课堂 - SpeakingMax英语口语达人