It has created computer scans to provide precise records of the damage to the ruins and identified the most pernicious threats, starting with erosion caused by salty groundwater.

他们创建了计算机扫描模型，为废墟的损害程度提供最精确记录，确定危害程度最大的因素，含盐地下水首当其冲。

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If the water in a mine is salty, drinking it can cause quicker dehydration, kidney failure and other damage, said Alan Ducatman, a professor at the West Virginia University School of Medicine.

美国西弗吉尼亚大学（West Virginia University）医学院的教授达卡特曼（Alan Ducatman）说，如果井下积水是咸的，饮用它会加快人体脱水，引发肾衰竭和其他问题。

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The authority will shut down power to its signal system if it appears that large amounts of water have entered the tunnels, to prevent the salty water from doing added damage to sensitive electronic relays.

WSJ: Salt Water Puts City's Subway System 'in Jeopardy'