1. 寓言
A fable is a story which teaches a moral lesson. Fables sometimes have animals as the main characters.
e.g. ...the fable of the tortoise and the hare...
龟兔赛跑的寓言
e.g. Each tale has the timeless quality of fable.
每个故事都有其永恒的寓意。
2. 谣传;无稽之谈
You can describe a statement or explanation that is untrue but that many people believe as fable .
e.g. Is reincarnation fact or fable?
转世轮回是确有其事还是无稽之谈？
e.g. ...little-known horticultural facts and fables.
有关园艺的鲜为人知的事实和谬传