即使当四肢被截断或者其与神经系统失去了联系，曾经可以感受截肢存在的神经仍旧是正常工作的。
Even when a limb has been severed or cut off from the nervous system, the nerves that once serviced it remains alive and well.
该感受器位于下丘脑的一小部分神经元上，一个调节食欲的地方。
This receptor is located on a small set of neurons in the hypothalamus, a region that regulates appetite.
从我绷紧的神经和大量分泌出的肾上腺素里让我感受到心脏是如何不断加速跳动。
When I'd feel my heart racing, from nerves and adrenaline, I'd wonder if I were close to a heart attack.
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