An estranged father and son are brought together by a young crane named Karl as they trace a family of the birds on their migratory journey from Russia to Africa啊，特殊建筑物？只能有一(yī )个(gè )？既然(rán )不能(néng )建造，那五百积分，不能返回吗？(❇)还有，哪些建筑物属(🎅)于特殊建筑(➗)(zhù )物(🥒)(wù )？陈天豪惊讶的问道。