And even under ideal conditions, clearing mines is agonizingly slow. Savitz estimated the cost ratio between laying and clearing at “between one and three orders of magnitude”—essentially, up to a thousand times more expensive to remove a mine than to deploy one.
В США заявили о закладке фундамента для возвращения России на Олимпийские игры14:52
，更多细节参见搜狗输入法
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