我们为什么有指纹?
时间：2019-03-06 作者：英语课 分类：英语听力广播—Listening
英语课
Why do we have fingerprints 1?
我们为什么有指纹？
Many experts think it's to improve grip, but a British study from a few years back suggests otherwise.
Researchers found that a fingerprint's ridges 2 actually madeit harder to hold flat, smooth surfaces, like Plexiglas, because they reduced the skin’s contact area.
Instead, they think our prints might help wick water off our fingertips or allow our skin to stretch more easily, which can protect it from damage and help prevent blisters 3.
Other scientists have suggested fingerprints could improve our sense of touch.
What we do know for sure is that no two people's fingerprints are the same, even among identical twins.
我们为什么有指纹？
Many experts think it's to improve grip, but a British study from a few years back suggests otherwise.
Researchers found that a fingerprint's ridges 2 actually madeit harder to hold flat, smooth surfaces, like Plexiglas, because they reduced the skin’s contact area.
Instead, they think our prints might help wick water off our fingertips or allow our skin to stretch more easily, which can protect it from damage and help prevent blisters 3.
Other scientists have suggested fingerprints could improve our sense of touch.
What we do know for sure is that no two people's fingerprints are the same, even among identical twins.
n.指纹( fingerprint的名词复数 )v.指纹( fingerprint的第三人称单数 )
- Everyone's fingerprints are unique. 每个人的指纹都是独一无二的。
- They wore gloves so as not to leave any fingerprints behind (them). 他们戴着手套，以免留下指纹。 来自《简明英汉词典》
n.脊( ridge的名词复数 )；山脊；脊状突起；大气层的)高压脊
- The path winds along mountain ridges. 峰回路转。
- Perhaps that was the deepest truth in Ridges's nature. 在里奇斯的思想上，这大概可以算是天经地义第一条了。