During the summer holidays, double eyelid surgery is common among students.

暑假期间，双眼皮手术在学生群体中比较常见。

This is what differentiates between a single eyelid (monolid) and a double eyelid.

这就是单眼皮和双眼皮的区别。

According to Xinhua, an underage girl surnamed Zhang had double eyelid surgery, but she couldn't open her eyes after surgery due to errors made during the operation.

据新华社报道，一名姓张的未成年女性接受了双眼皮手术，但手术出现失误，导致她在术后无法睁眼。

Keep in mind your eyes can change with time so it is not uncommon - for example to start with single eyelids that slowly change into double eyelids.

记住，人的眼睛是会随着时间推移而变化的，因此，单眼皮逐渐变成双眼皮这样的例子并不奇怪。

Tens of thousands of people have been entrapped by the aesthetics of the era for many years — plump breasts, thin waist, big butt, slim legs, double eyelids, and big eyes.”

成千上万的人多年来一直被时代的审美所困扰——丰胸、细腰、巨臀、瘦腿、双眼皮和大眼睛。”

When I lived in South Korea, I heard my Korean coworkers, when they were speaking in English, I heard them use the terms, mono lid and double eyelid in their English conversations.

当我住在韩国的时候，我的韩国同事用英语交谈时，我听到他们在英语对话中使用单眼皮和双眼皮这两个术语。

So if you were to have a conversation with someone in English and you said, yeah, he has a mono lid or a double eyelid, most other people in the Western world are not familiar with this concept.

所以如果你用英语和某人交谈，你说，是的，他是单眼皮还是双眼皮，大多数西方国家的人都不熟悉这个概念。