亚洲91视频,国产91网,久久久久久久久久久久久久久国产,亚洲一区二区三区日本久久九,亚洲日本久久,国产精品久久久99,亚洲欧美一区二

US EUROPE AFRICA ASIA 中文
China / China

A 17-year career in tunnel maintenance

(chinadaily.com.cn) Updated: 2011-06-25 16:29
A 17-year career in tunnel maintenance

Xu Caiyun patrols the Guanjiao tunnel, in a section of the Qinghai-Tibet Railway in Haixi Mongol and Tibet autonomous prefecture in Northwest China's Qinghai province, June 25, 2011. The 44-year-old Xu has been doing maintenance work for 17 year under the harsh conditions of the tunnel, where icicles and frost are common. The 4-kilometer Guanjiao tunnel, at an elevation of 3,700 meters, is the longest tunnel in the world on a plateau. [Photo/Xinhua]

Previous Page 1 2 3 4 5 Next Page

Highlights
Hot Topics

...