And Harry, with the unerring skill of the Seeker, caught the wand in his free hand as Voldemort fell backward, arms splayed, the slit pupils of the scarlet eyes rolling upward.

利，做为一个出色的找球手，在伏地魔倒地的同时用他空着的一只手抓住了那根魔杖--伏地魔双臂张开，猩红的眼睛里的瞳孔张开翻了起来。

Her pupils were dilated. Her expression was vacant.

她的瞳孔扩张，表情很茫然。

Even really good actors probably can't control their pupils.

再好的演员没法控制自己的瞳孔。

Your pupil is the size of a nickel.

你的瞳孔就跟五分硬币一样大。

Lastly, your pupils sometimes dilate if you're in love or if you're aroused.

最，当你恋爱或被唤醒时，你的瞳孔有时会大。

Harry saw is pupils contract to thin slits, saw the skin around his eyes whiten.

利看到他的瞳孔缩成了两条窄窄的细缝，看见他眼睛周围的皮肤变白了。

If a pancoast tumor pushes on or invades these sympathetic nerves, it can cause miosis - a small or constricted pupil, ptosis - a droopy eyelid, and anhydrosis - a failure to sweat, all on the ipsilateral, or same side, of the face as the nerve.

如果肺上沟瘤向上挤压或侵袭交感神经，则会出现瞳孔缩小、上睑下垂、无汗等症状，这些都发生于神经支配的同侧面部。

As they attempt to pay more attention and try to get engaged with the conversation, their pupils will inevitably enlarged to let more of what they like to enter their eyes.

当人试图集中注意力并尝试参谈话时，瞳孔会大，让更多喜爱的事物进入视线中。

Your heart beats faster, your pupils dilate, and your body releases glucose for additional energy, not because you're in danger but because your body is telling you that something important is happening.

你的心跳加速，你的瞳孔扩大，你的身体出葡萄糖来提供更多的能量，这不是因为你面临着危险，是你的身体在告诉你这件事十分重要。

If a lot of light is coming in like when using light modes, our pupils contract allowing less light in, creating a wide depth of field.

如果大量的光线进入到我们的眼睛，比如我们在使用光亮模式时，瞳孔就会收缩，只允许少量光线进入，从创造了广阔的景深。

The center of one's eye, the pupil, is dark and round.

眼睛的中心是瞳孔，瞳孔是暗色的、圆形的。

Your pupils dilate when you're scared, nervous or excited.

当你害怕、紧张或兴奋时，你的瞳孔会大。

Elongated pupils help sharpen certain dimensions of an animal's vision.

细长的瞳孔有助于提高动物视觉的某些维度。

They also oppose changing physical qualities such as eye color or height, the study found.

他们还反对改变瞳孔颜色或身高等身体特质。

Their pupils that can see through the texts of time.

她有看透岁月篇章的瞳孔。

During totality it's dark, so your pupils have dilated to let more light in.

日全食时天空完全黑暗，你的瞳孔会扩张来让更多的光线通过。

And of course, the pupil was precious, because you can't see without it.

当然，瞳孔很珍贵，因为没有它，你什么看不到。

It will alter my behavior without my knowledge, and it can increase the diameter of my pupils if I experience something I really like.

它会在人们没有意识到的情况下改变行为，并扩大瞳孔，仿佛我们真的经历了喜欢的事情一样。

The pupils enlarge when there is no light.

没有光的时候，瞳孔会大。

It is always round, however bright the light may be.

不管光线怎么强烈, 瞳孔一直是圆的。