我知道这听起来很古怪，但是我当时与朋友聊得太投入了，没有注意到天变暗了——暗得不是太明显，只是足以让人察觉。
I know this sounds weird, but I was so interested in my friends, I didn't even notice the sky had gotten darker- not much, just enough.
剑桥无论是单调而现代的郊区，还是满是漂亮建筑物的市中心，都无法让人察觉到这里其实是英国最大的高新科技商业中心。
NEITHER the drab modernity of the suburbs nor the beautiful buildings in the centre hint that Cambridge is at the heart of one of Britain's biggest clusters of high-tech businesses.
也许是因为布什表现出的镇定常常让人感觉像是周遭的一切都不关他什么事，对于外面发生的一切他毫无察觉，无论是伊拉克，路易斯安那(卡特里娜飓风)，还是阿富汗。
Perhaps this is because Bush's calm often seems utterly disconnected from the realities around him; he appears thoroughly unaware of the facts on the ground, whether in Iraq, Louisiana or Afghanistan.
然而，让人更难的不是承受患者的离去，而是对今后医患关系的一系列限制——这一点那天下午，那名护士已经敏锐的察觉了。
However, as the nurse so perceptively noted that afternoon, what was more difficult for her to bear this time was not the loss but the constraint imposed on the relationship afterward.
一个研究小组通过利用X射线技术“逐层剥开”了这副名画，以探索这位意大利大师是怎样使其肤色明暗之间的梯度几乎让人无法察觉的。
Using X-ray techniques, a team "unpeeled" the layers of the famous painting to see how the Italian master achieved his barely perceptible graduation of tones from light to dark.
对对宇宙中到处都有人们看不见的物质这种观点——这种物质可以轻松地穿过差不多所有物体而不被人察觉——很难让人接受。
That the universe is filled with matter people cannot see-matter that simply passes through pretty much everything undetected-is hard to accept.
支持禁止使用的人士说让青少年置于这种噪音之下是不公平的，这种噪音只有青少年才能察觉到，成年人对这并不是那么敏感了。
Campaigners say that it is unfair to subject the young to a discomforting sound that only they can detect—older ears are no longer sensitive enough to detect the Mosquito's din.
有时候又是很细微的，让人难以察觉，就像一个眼神，一个动作……我的父亲，很高大，很强壮，在我面前是个威严的爸爸。
Sometimes also is very slight, lets the human realize with difficulty, looks like a look, a movement... My father, very big, very strong, in front of me is the dignified daddy.
有时候又是很细微的，让人难以察觉，就像一个眼神，一个动作……我的父亲，很高大，很强壮，在我面前是个威严的爸爸。
Sometimes also is very slight, lets the human realize with difficulty, looks like a look, a movement... My father, very big, very strong, in front of me is the dignified daddy.
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