我们为什么有指纹?

Why do we have fingerprints¹?

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 ridges² 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 blisters³.

 

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.

 

1 fingerprints   

n.指纹( fingerprint的名词复数 )v.指纹( fingerprint的第三人称单数 )

参考例句：

• 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》

2 ridges   

n.脊( ridge的名词复数 )；山脊；脊状突起；大气层的)高压脊

参考例句：

• 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。

3 blisters   

n.水疱( blister的名词复数 )；水肿；气泡

参考例句：

• My new shoes have made blisters on my heels. 我的新鞋把我的脚跟磨起泡了。 来自《现代汉英综合大词典》
• His new shoes raised blisters on his feet. 他的新鞋把他的脚磨起了水疱。 来自《简明英汉词典》