However, the cold weather seems to be imperceptible to winter swimming enthusiasts.

然而寒冷天气并没有冷却冬泳们热情。

Or is it his almost imperceptible limp from last year's water crossing?

还是他去年过河时几乎察觉不到跛行？

An almost imperceptible raise of the hand indicates a bid.

一个几乎觉察不到举手则表示叫牌。

The idea is that it's sort of imperceptible which one it is.

这个想法是，它有点难以察觉该是哪一个定位。

Oh, gives a little bit of spray. It's almost imperceptible.

它喷出了一点点毒液，几乎察觉不到。

Yet, imperceptible to the human eye.

然而肉眼却无法看见它。

His hearing is better than ours too, tuned to sounds that are completely imperceptible to the human ear.

它听力也比我们强，能听到人耳完全听不到声音。

I bowed to him. He gave me an almost imperceptible bow in return, without saying a word to me.

我向他行个礼。他回答我一个礼，这是一种差不多看不出来礼，一句话也没有说。

These are vocalizations which are normally imperceptible to humans, and which form a fundamental part of cetacean social behavior.

这些发声通常是人类察觉不到，也是鲸目动物社会行基本组成部分。

It responded to an almost imperceptible touch on it.

它对几乎难以察觉触碰做出了反应。

Their intimacy increased by regular and almost imperceptible degrees.

他们亲密程度有规律地增加， 几乎难以察觉。

The instances of a word shade off into other movements by imperceptible degrees.

一个词实例以难以察觉程度逐渐融入其他动作。

This last with soft, almost imperceptible, cynicism.

最后是柔和、几乎难以察觉愤世嫉俗。

I don't know why that thought filled me with a very faint, almost imperceptible joy.

我不知道什么这个想法让我心里充满了一种非常淡淡、几乎难以察觉喜悦。

The almost imperceptible shrug that said Who cares about her?

几乎察觉不到耸耸肩, 说谁关心她?

Yet, this genetic material may be present in such imperceptible amounts that actually detecting it is difficult.

然而，这种遗传物质可能以难以察觉数量存在，以至于很难真正检测到它。

This would make his movements so impossibly slow that they would be all but imperceptible to the enemy.

这将使他动作慢得不可思议，以至于敌人几乎察觉不到。

Passing by imperceptible gradations from one form to another, it will be seen to achieve the strangest metamorphoses.

从一种形式到另一种形式， 通过不可察觉渐进，我们将看到它实现了最奇怪变形。

But inexorably, every thirty seconds, the minute hand of the electric clock above his bed jumped forward with an almost imperceptible click.

但无可改变是，他床头电钟分外每三十秒就要发出几乎听不见一声“嗒”，跳前一步。

The end part of the wing, just  beyond the outboard engine pylon, has an almost imperceptible twist  to it.

机翼末端，就在舷外发动机挂架之外，有一个几乎察觉不到扭曲。