Main disasters of resource-exhausted cities are underground disaster, ground surface disaster, water environmental disaster and atmospheric environmental disaster.
资源枯竭城市灾害主要为地下、地表、水环境和大气环境灾害。
Tourism industry is one of the main users of surface and underground water.
旅游业是地表水和地下水的主要使用者之一。
The water proof gate is the main safety facility against underground water to the coal mine threatened by water disaster.
对于受水害威胁的矿井，防水闸墙是井下防水的主要安全设施。
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