工厂的外貌也是十分雄伟的，铁塔巍峨，管道如网，机声隆隆，毫不逊于钢铁厂。
B-Organization I-Organization O O O O O O O O O O O B-Thing I-Thing O O O B-Thing I-Thing O B-Thing O O O O O O O O O O B-Organization I-Organization I-Organization O