Dilated pupils indicate strong feelings: playfulness, agitation, fright, or aggression.

瞳孔放大代表着强烈的情感：玩耍、激动、害怕或攻击行为。

With no need for eye drops that dilate your pupils for hours.

如此一来，你不需要再检查眼睛前滴上散瞳药水了。

The interesting bit is that though your pupils would have dilated you often become effectively blind when you fully engage system two.

有趣的一点，虽然你瞳孔变大，但是当你完全使用二号系统时，你经常会成为有效率的盲者。

Normally, these sympathetic nerves help to dilate the pupil, raise the eyelid, and help stimulate the sweat glands.

正常情况下，这些交感神经能扩瞳、提上眼睑，以及协助刺激汗腺。

In ophthalmology, a synthesized form of the same chemical can still be used to help dilate the pupils.

在眼科，这种化学物质的合成物仍可以用来帮助扩大瞳孔。

These can let through too much infrared and ultraviolet light, and again can dilate your pupils, actually making things worse.

过多的红外线和紫外线都能穿过他们，同样会使瞳孔扩散。实际上让情况更糟糕。

They often have dilated pupils or blurry vision as side effects, but those aren’t the goal.

他们的副作用通常是瞳孔放大或视力模糊， 但这不是目标。

These chemicals are involved in the “high” feeling but also cause dilated pupils.

这些化学物质与“高” 感有关，但也会导致瞳孔散大。

Vitale says if a cat is showing signs of aggression (dilated pupils, a fast-twitching tail, fur standing on end, hissing, or growling), just walk away.

瓦伊塔尔说，如果一只猫表现出攻击的迹象(瞳孔放大、尾巴快速抽动、毛发竖起、发出嘶嘶声或咆哮)，那就走开。

In case a house is new for your cat, it dilates its pupils as a sign that it's not used to the new place yet.

如果你的猫咪刚到一个新家，瞳孔就会放大，这表明它还不适应新环境。

The interesting bit is that though your pupils would have dilated you often become effectively blind when you fully engage system 2.

有趣的是，虽然你的瞳孔会放大，但当你完全使用系统 2 时， 你通常会变得实际上失明。

It also activates noradrenaline receptors, which increases the heart rate, dilates pupils, and triggers the body's fight or flight response.

它还会激活去甲肾上腺素受体，从而增加心率、放大瞳孔并触发身体的战斗或逃跑反应。

Others, like the drops used to dilate pupils for eye exams, are more targeted and don’t throw your whole body off.

其他的，比如用于眼科检查的散瞳眼药水， 更有针对性， 不会把你的整个身体都扔掉。

Today, doctors still use atropine for its muscle relaxing and anesthetic effects, mainly to dilate your pupils before eye exams. They just use it in very small, controlled doses.

今天，医生仍在使用阿托品， 因为它具有肌肉松弛和麻醉作用，主要用于在眼科检查前散瞳。 他们只是以非常小的、受控的剂量使用它。

He spoke two short sentences in a low voice, watching her all the time; for the pupils of her eyes dilated into a black horror and the whiteness of her complexion became livid.

他低声说了短短的两句话， 一直注视着她； 因为她的瞳孔放大成黑色的恐惧， 她白皙的脸色变得铁青。

For $15,000 or so, iMotions, based in Copenhagen, gives retailers an EEG cap that detects brain activity, an eye-tracking headset that notes when an attractive object dilates pupils, and a galvanometer.

位于哥本哈根的iMotions 公司向零售商提供一顶检测大脑活动的脑电图帽、一个眼球追踪头戴设备（能注意到瞳孔何时因看到感兴趣的物品而扩大），以及一个电流计，总费用约为1。5万美元。