被纸割伤为什么那么疼？真是十指连心？_BEC初级作文

被纸割伤为什么那么疼？真是十指连心？

And paper cuts are typically shallow – but not too shallow. They’re deep enough to get past the top layer of the skin, otherwise they wouldn’t hurt. The top layer of skin has no nerve endings. But they don’t slice that deep into your body, which is perhaps why it’s puzzling that they should hurt so much. A deeper wound would result in bleeding. The blood would clot and a scab would develop, beneath which the skin could go about healing free from the continuedassault of the outside world. But the shallow wound of a paper cut doesn't offer such protection.

被纸割出的伤口浅，但也不是太浅。伤口深入到皮肤表层之下，否则就不疼了，皮肤表层没有神经末梢。但他们还不太深，这可能就是为什么人们会疑惑怎么这么疼，更深的伤口会引起出血，血会凝结，然后结痂，下面的皮肤可以不受外界干扰自行修复。但纸割出的浅的伤口就没有这种保护。

Without the cushion of blood, pain receptors are left exposed to the elements, and unless you quickly bandage your paper cut, those neurons will keep on sending the alarm bell. That, after all, is their job.

没有血液的这种保护作用，痛觉感受器被暴露在自然环境之中，除非快速包扎伤口，否则神经元会一直传送警报，毕竟这就是它们的工作。

Unfortunately, each of us is going to face the prospect of enduring a few paper cuts as we go about our lives. Luckily, a thousand paper cuts would really really hurt, but it probably wouldn’t kill you.