some profit in return.
所有跟帖:
• Shells could be money, if you will. Money is currency. -renqiulan- ♂ (0 bytes) () 10/11/2023 postreply 17:15:38
• Currency is for exchange, which is for trade. No trade, -renqiulan- ♂ (0 bytes) () 10/11/2023 postreply 17:17:43
• no modern civilization. History is progress toward -renqiulan- ♂ (0 bytes) () 10/11/2023 postreply 17:18:48
• modern civilization, hopefully. -renqiulan- ♂ (0 bytes) () 10/11/2023 postreply 17:19:18