一些世界上最大和造价最贵的基础设施工程在中国。
Some of the world's biggest and most expensive infrastructure projects are in China.
youdao
管线设施埋藏等施工资料管理。
Pipeline facilities information, such as bury construction etc. management.
还有多支油田建设施工队伍。
Also involved are many oilfield construction teams.
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