# 人體的神經有一個怪現象:那些稱為周邊神經系統的神經,在受到損害後,可以修復與再生,然而,屬於腦部與脊髓的那些更為重要的神經,卻無法如此。如果你切到手指,神經會再長回來,不過,如果傷害到脊髓,就只能聽天由命。不幸的是,脊髓損傷很常見——《身體》
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