Quick progress is difficult but rewarding, offering a high that is undiscoverable to those who leave things till the very end.

快速取得进展很难，但回报很高，这样做所提供的快感是那些把事情留到最后做的人无法发现的。

There was nothing else left to do; after that he would allow the enigma to drop into the abyss of undiscoverable things.

除此之外便不再有其他途径；找过那孩子之后，他将让这个谜沉入那永远无解的深渊。

He gazed into her face in a vague, wondering manner, like that of one examining some strange old manuscript the key to whose characters is undiscoverable.

他用茫然的眼光盯着她的脸，就好像一个人在看某种古老的手稿，却找不到破译这种文字的关键。

They had come on direct from the East, had not yet visited any of their friends in the state, and considered themselves undiscoverable.

他们是直接从东方来的，还没有拜访过他们在该州的任何朋友，并认为自己无法被发现。

This may not be a cheering prospect; but we shall at least be freed from the vain search for the undiscovered and undiscoverable essence of the term species.

这可能不是一个令人鼓舞的前景。 但我们至少应该从徒劳地寻找物种这个术语的未被发现和不可发现的本质中解脱出来。

Moreover, it still believed, except in Great Britain, that a priori reasoning could reveal otherwise undiscoverable secrets about the universe, and could prove reality to be quite different from what, to direct observation, it appears to be.

此外，除英国外，它仍然相信先验推理可以揭示宇宙的其他方面无法发现的秘密，并可以证明现实与直接观察所显示的完全不同。