The investigators found that the underground pipes were badly corroded.

调查人员发现地下管道已是严重腐蚀的。

《柯林斯英汉双解大词典》

Need to do now is the construction of underground pipes will be harmonized.

现在亟待要做的事就是将地下管网的建设统一起来。

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Be applied for the corrosion protection, conduction and electrostatic transfer of earthed systems and underground pipes.

用于高压输电线杆接地网及石油化工地下管线防腐、导电、防静电用。

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He warned that at current rates of investment it would take 1, 500 years to renovate Britain's underground pipes.

BBC: NEWS | Programmes | File on 4 | Neglected sewers threaten floods

Planting native shrubs in clear-cut areas, which need to remain treeless to avoid root damage to underground pipes and to give maintenance crews access, would be better than just grass, the Nature Conservancy noted.

WSJ: Northeast drilling boom threatens forest wildlife

On loan from a Mexican museum, the work is nearly eight feet high by more than six feet wide, and depicts Depression-racked New York in four tiers: skyscrapers, a homeless shelter, underground pipes, and a bank vault.

NEWYORKER: The Painting on the Wall