来自《耶鲁大学开放课程：生物医学工程探索第1集第1集》

Engineers who are developing new materials,

工程师们不断研制新的材料
materials that can be, if you think about it,

这些材料应该是想想吧
there's not very many things that you would want to

能让你们敢于
put in your eye and

放到眼睛里的
you'll feel comportable to put in your eye

并令人感到舒适的材料并不多
so this is a very safe, a very inert material.

这应该是一种非常安全非常稳定的材料
What gives it those properties?

是什么赋予了材料这样的属性
What makes it so safe that it can be put in

是什么使得它足够安全
one of the most sensitive places in your body,

以至于能放到眼睛
in contact with your eye?

这个人体最敏感的器官之一上
Why do you have confidence putting it

为什么你对它有信心
in contact with

让它接触