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1. The quartz-banded ore is a valuable resourcefor the mining industry.
石英带矿石是矿业的宝贵资源。
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2. The quartz-banded ore was minedfrom deep in the earth's crust.
石英带矿石是从地壳深处开采出来的。
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3. The quartz-bandedore has been used in jewelry makingfor centuries.
石英带矿石被用于制作珠宝数百年。