山泥倾泻危险;滑坡危险:landslide hazard 山泥倾泻面;滑坡面:landslide surface 山泥倾泻勘测部(土木工程署):Landslip Investigation Division [Civil Engineering Department] ..
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山泥倾泻危险;滑坡危险:landslide hazard 山泥倾泻面;滑坡面:landslide surface 山泥倾泻勘测部(土木工程署):Landslip Investigation Division [Civil Engineering Department] ..
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