steel structure短语⁵⁰¹⁴⁰ 基本例句 钢结构 A laborer worked on a steel structure at a financial building construction site in Jefei, China, Friday. The cityscape below was obscured by smoke from burning straw. 周五，在合肥金融大厦的施工现场，一个工人正在维修钢材设备，他脚下的城市笼罩在因烧稻杆而升起的浓雾当中。 yeeyan