终于还是承认了古文明的先进性。埃及金字塔的建造秘密也快揭示了吧。

How are ancient Roman and Mayan buildings still standing? Scientists are unlocking their secrets
https://news.yahoo.com/ancient-roman-mayan-buildings-still-050459638.html?fr=yhssrp_catchall&guccounter=1&guce_referrer=aHR0cHM6Ly9zZWFyY2gueWFob28uY29tLw&guce_referrer_sig=AQAAAByY_65gDD_XwFKkgaSWoF1b8Sl4ahbFzY9g_7AdH3XIoO__VkJIEwBDlkAL3V6nSHPT9Aqng4Wtab_iLVNF-VH8JfRocKoch7pz_mnFnJXeuIuigxmol3R4eNqvhvePyBZ_Jie0ZtbonMzW3LJZnb29rLQ59JZ37Jt4UwrjLDkd