請樓主看看
A butterfly's wings might create tiny changes in the atmosphere that ultimately cause a tornado to appear (or prevent a tornado from appearing).The flapping wing represents a small change in the initial condition of the system,which causes a chain of events leading to large-scale phenomena.Had the butterfly not flapped its wings,the trajectory of the system might have been vastly different.
如果樓主需要表達上句意思 添加AFRICA 以及TX的地名就可以了
剛剛在圖書館幫你找了一下 還有一些其他的不知道還有用不 先寫這一段吧