water flow auto system to prevent and solve  disaster , set space

to stay escape and food /water to public.Setting tunnel to let water flow out fluently using machine/ to clear it the tunnel,prevent it happen again.

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災害防治系統,設置高處提供必難

及放置水/食物, 使用機械協助清理河道瘀塞,設置自動化水管水流通順暢

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