Wherefore the necessity for his periodical visits to the upper world.

因此，它需要定期露头拜访一下水上的世界。

To ally myself with them against the " upper world" would have been mere dishonesty, or sheer despair.

与他们结盟反对“上层世界” 只会是不诚实或彻底的绝望。

Some of them, he relates, had been hunters in the upper world of the Mississippi, above the falls of St. Anthony. Some had been still farther north, in Canada.

他说，他们中的一些人曾经是密西西比河上游世界的猎人，就在圣安东尼瀑布上方。 有些还在更北的地方， 在加拿大。

They wound this way and that, far down into the secret depths of the cave, made another mark, and branched off in search of novelties to tell the upper world about.

他们绕来绕去，深入到洞穴的秘密深处，做了另一个标记，然后分叉寻找新奇事物，告诉上面的世界。

My uncle's last words echoed painfully in my ears: " it's all over! " For in such a fearful state of debility it was madness to think of ever reaching the upper world again.

叔叔的最后一句话痛苦地回荡在我的耳边：“一切都结束了！ ”因为在如此可怕的虚弱状态下， 想到再次到达上层世界简直是疯狂。