The script was not completely prepared when filming began, since the filmmakers were more focused on the story and the action, so the dialogue was mostly ad-libbed throughout filming;

电影开拍之时本片的剧本还没有写完，因为摄制人员更关注于电影的故事和动作场面，所以大部分的台词都是在拍摄过程中即兴发挥的；

All of this was ad libbed by Matt Damon.

所有的话都是马特.达蒙临时发挥的。

People call me Forrest Gump, " was ad libbed by Tom Hanks while filming the scene and director Robert Zemeckis liked it so much that he decided to keep it in."

这句台词是拍摄中汤姆·汉克斯不小心说出来的，导演非常喜欢这句台词，所以在后来合成时就保留下来了。