Her pupils were dilated. Her expression was vacant.

她的瞳孔扩张，表情很茫然。

When you shine a light on HAL's eyes, his pupils may or may not dilate.

当你用光照射 HAL 的眼睛时，他的瞳孔会根据病情选择性地放大或不放大。

Harry could have sworn his over-large nostrils were dilating, trying to sniff Harry out.

哈利敢肯定，他本来就大的鼻孔张得更大了，像要嗅出哈利所在的位置。

When animals get hot, tiny capillaries near the surface of the skin dilate.

动物热的时候，体表的毛细血管扩张。

Ms Sumner, your pupils are dilating.

萨姆纳小姐，你瞳孔在扩大。

Her face went whiter and her brown eyes dilated enormously.

她的脸色更苍白，那双褐色的眼睛也瞪大到了吓人的程度。

This is where the arteriole walls develop hyaline deposits, which makes it harder for them to dilate.

这是小动脉壁形成透明沉积物的地方，使得它们很难扩张。

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。

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。

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。