"Do you remember much about the accident?" "No, it all happened so suddenly." “你还记得事故是怎么回事吗？”“不记得了，事情发生得太突然了。”
I was just dozing off when suddenly I heard a scream from outside. 我正昏昏欲睡的时候，突然间听到外面一声尖叫。
I suddenly realized what I'd said, but it was too late. 我突然意识到自己说了什么，不过为时已晚。