Possibly they first found native copper and hammered it into shape .

可能他们最初找到的是生铜，把它锤击成形。

youdao

Keweenaw native copper deposit was formed in an intracontinental rift.

基维诺自然铜矿床生成于陆内裂谷环境。

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Finally, the paper discusses prospecting and exploration for native copper deposit in China.

最后探讨了自然铜矿床在我国的找矿勘探前景。

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They wore on their coats a copper penny showing the head of a Native American Indian.

VOA: special.2009.10.29

Also Intel indicates that they will have copper-based Thunderbolt with 20 Gbps native data rate available by 2014.

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The NRW said that where it had colonised, it was out-competing the native plant species such as grey willow and rare copper moss.

BBC: Towy anglers urged to help remove Himalayan balsam

Laura Vanegas, a 45-year-old native of Ecuador, changes into her Liberty robes and applies copper-green face paint behind the Times Square military recruiting station.

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