Fingernails

Fingernails “ OUCH! ” cries Sammy. “ That hurts. ” She just hit her finger with a hammer while trying to hang a picture on the wall. Sammy feels an ache in her finger. Every time her heart beats, she feels the pain. So her father takes her to the doctor. The doctor looks at Sammy's finger. He says, " That must hurt. There are a lot of little nerves in your fingers. Nerves tell your brain when something hurts. Fingers are VERY sensitive to pain. ” Sammy is a smart little girl. She thinks about it for a minute. Then she says, " Doctor Jones, why does it hurt when I hit my finger, but it does not hurt when I cut my fingernails?"

指甲 “哎哟!”萨米。“疼。”她刚在墙上挂画的时候用锤子砸到了自己的手指。 萨米感到手指疼。她的每次心跳一下，就疼痛一次。于是她的父亲带她去看医生。 医生看了看萨米的手指。他说。“那一定很疼。你的小手指有很多小神经。神经会告诉你的大脑哪里疼。手指对疼痛非常敏感。” 萨米是个聪明的小女孩。她想了一会儿。然后她说。“琼诺斯医生，为什么我打到手指的时候会疼。但我剪指甲的时候不疼吗?”

The doctor smiles. " Good question, " he says. " Your fingernails are there at the end of your fingers. But they are not your fingers. Fingernails do not have nerves. They cannot feel anything. ” Sammy smiles. She thinks she knows the answer, but asks anyway, " So is that why my hair doesn't hurt when l cut it?”

医生笑了。“好问题，”他说。“你的指甲就在你手指的末端。但它们不是你的手指。指甲没有神经。他们感觉不到任何东西。 萨米微笑。她自以为知道答案，但还是问:“这就是为什么我剪头发时不疼的原因吗?”