革新革新种植园plantation_buildings_advancein_game/common/advances/0_age_of_discovery.txt:197新大陆温和宜人的气候和广阔肥沃的土地,使殖民地成为生产高利润作物的理想土地,比如糖和烟草。需要殖民特许状革新requires革新树发现新大陆殖民特许状种植园高炉 之后还有3项定义in_game/common/advances/0_age_of_discovery.txt:197198age = age_3_discovery200requires = colonial_charters201unlock_building = sugar_plantation202unlock_building = tobacco_plantation203unlock_building = cotton_plantation205▾ai_preference_tags = {exploration}