Following the sparse Alexandrite veins through pegmatite rock with hand dug trenches, open pits and small tunnels, mining was very primitive to say the least.
英
美
释义
他们赤手掘出壕沟,在伟晶岩石层中寻觅稀疏的亚历山大石矿脉,开坑打洞,开采无比原始。
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