A peasant may agree to sell his kidney or cornea to feed his starving family , but his agreement may not really be voluntary .
一个农民也许会同意拿自己的肾脏或眼角膜换钱来养活挨饿的家人,但他的同意或许并非出自自愿。
Gray isn 't just for hair . Some people develop a gray ring around the edge of the cornea .
不只是头发会变成灰色,有些人眼角膜的边缘也会变成灰色。
They are not considered a major hazard outside the human body , although in large doses , they can damage the cornea of the eye .
尽管大量的β粒子会造成眼角膜损害,但人们并不将其视为人体外的主要危害。
The condition is caused by damage to the surface of the cornea from disease , chemical burning or physical injury .
角膜缘干细胞缺损的原因包括疾病、化学性灼伤或物理伤害造成的角膜表面受损。
These lenses cover not only the cornea , like a regular contact , but also the surrounding area .
该隐形眼镜不仅覆盖普通隐形眼镜也覆盖的角膜,而且还覆盖角膜周围组织。
Any full-thickness injury to the outer membranes of the eye ( cornea or sclera ) is considered an open globe .
任何一种眼球外层膜性结构(角膜或巩膜)的全层损伤都可被视作眼球破裂。
When light strikes the cornea , it bends before reaching the lens which then focuses it onto the retina .
当光线照到角膜上,它要先弯曲,然后达到晶体,最后被聚焦到视网膜上。
This is a good position to start from , because most material properties of tissues are indeed adaptive , from the flexibility of skin to the transparency of the eye 's cornea .
这是一个很好的起点,从皮肤的弹性到眼角膜的透明性,大多数的组织物质特性都确实有很强的适应性。
The newcastle team took a small biopsy from the cornea of mr turnbull 's good eye and multiplied its stem cells by 400 times .