... 矿床水文地质 mine hydrogeology 矿床疏干 mine draining 预先疏干（超前疏干) predraining (advance draining) ...
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mine draining
矿山排水
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Mrs McCourt and her family have spent years looking for her body in a hunt which has included draining ponds and exploring old mine shafts.
BBC: Celebration held for murdered woman Helen McCourt
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