不可察觉的

Imperceptibility and robustness, which are the basic requirements of digital watermark, conflict with each other.

不可察觉性和鲁棒性是图像水印中基本要求，但它们却是一对互相制约的因素。

Some of the major concerns of people at large are the air quality, marine and river pollution, and some indiscernible ecological problems.

但是，我们享用丰富的物质和先进的建设之时，也不可忽视背后其他问题，例如，大家所关注的空气质素、海水和河水的污染问题，以至一些不轻易察觉得到的生态问题。

The "I" in me , my friend ,dwell in the house of silence and therein it shall remain for ever more ,unpercieved ,unapproachable.

我的朋友，我身体里的我住在寂寞的房子里，它将永远住在那里，不被察觉，不可接近。

The "I" in me, my friend, dwells in the house of silence, and therein it shall remain for ever more, unperceived, unapproachable.

在我身体里边的"我"，居住在寂静的屋宇里，并将永居其中，不被察觉，不可接近。

There are several ways to make the sudden transport even more undetectable when part of a larger assault force.

这里有一些方法可以让在攻击大部队中的快速运输车变得更加不可察觉。

If industry uses indetectable audio transmissions to meet security concerns, it seems that the military and CIA would exploit the same technology and would have developed much more sophisticated technology for applications.

如果商业界通过使用不可察觉的音频传输来达到安全的目的，那看来，军方和CIA都会利用同样的技术，并且开发更加复杂的技术加以应用。

They did not yet see, and thousands of young men as hopeful now crowding to the barriers for the career do not yet see, that, if the single man plant himself indomitably on his instincts, and there abide, the huge world will come round to him.

他们还没有察觉，成千年青人正被阻拦于事业开始的门口；没有查觉，那只身一人，不可屈服的依靠自己的本能，坚持着的青年，那巨大的世界就会围绕他旋转。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。