translation.en: Well, that's because you've got receptors in your skin, touch and pain receptors, going back into your brain and saying "Don't worry, you're not being touched.
translation.zh: 那是因为我们皮肤上有感受器， 一种痛感受器，它会向大脑 反馈道：“切莫担心，你还未被触碰呢。