搜索筛选·搜索筛选可升级building_can_be_upgraded仅显示可升级的建筑本页内容关联定义历史记录属性关联没有指向其他条目的链接。定义in_game/gui/filters/42_building.txt:125scope = buildingtag = buildinggroup = 8▾trigger = {building_can_be_upgraded_by = scope:target}历史记录