https://d.ifengimg.com/w120_h90_q90/x0.ifengimg.com/house/2020/07/06/63148f259f2a5c8833ef1e23421a11a5.jpg

重庆大力推行多杆合一,推进新型智慧城市建设

我国这条深埋隧道全球第一 堪称高难度隧道典型代表-来自凤凰新闻客户端

https://ihouse.ifeng.com/pic/2018_11_07-38900480_0.shtml