Founders of the polar circle diving center are making holes in the ice with help of hand drills and augers.

极地圈中心的创建者正在冰里用钻孔机钻孔。

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Founders of the polar circle diving center are making holes in the ice with help of hand drills and augers.

极地圈中心的创建者正在冰里用钻孔机钻孔。

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