Since July this year, Pakistan has been suffering severe flooding which caused grave casualties and property losses.

今年7月以来，巴基斯坦遭受严重洪灾，造成重大人员伤亡和财产损失。

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And the second reason was that extremely severe flooding — which had been rarely seen in history — also caused difficulties greater than we had expected.

第二，我国发生的历史上罕见的特大的洪涝灾害也超出了我的预料。

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