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explotación a cielo abierto por excavadoras
environ.	露天剥采 (浅表性开采，通过去除岩石覆盖以得到其中有价值的层：煤炭，非金属以这种方式工作的含金属(铁，铜)的矿物。同义：条带开采、露天开采、露天矿开采。)