https://www.rapbull.net/posts/2823/%e5%9f%8e%e9%82%a6%e5%ad%90%e6%b0%91%e6%87%89%e8%a9%b2%e4%bf%9d%e6%8c%81%e6%80%8e%e6%a8%a3%e7%9a%84%e8%ba%ab%e9%ab%94%e8%b7%9d%e9%9b%a2%ef%bc%9f/
城邦子民應該保持怎樣的身體距離?