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Sustainability is not an option; it's a necessity for the future of mining.

文學是發(fā)現(xiàn)普通人身上非凡之處的藝術，并用普通的語言表達非凡的內容。

Nature is the best teacher; it has already done the experiments, we just have to interpret them.

唯一的限制是你給自己設定的限制。