If we could figure out the scientific basis for Marty's hover board, that would have universal application.

如果我们能弄明白马蒂悬浮滑板的科学理论依据，就能在全世界投入应用了。

So, personally, I worry about their universal applications in some fields, such as finance.

因此，就个人而言，我很担心电脑的广泛应用在某些领域，例如金融方面的。

With species in a state of nature it can hardly be maintained that the law is of universal application; but many good observers, more especially botanists, believe in its truth.

对于处于自然状态的物种， 很难说法律是普遍适用的；但许多优秀的观察家， 尤其是植物学家， 相信它的真实性。