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Because of the small mine, usually the ore was excavated by hand.
由于矿体小，传统印石采制主要是手工挖掘。
youdao
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The scale is small, but ore-forming geological conditions are of special.
该规模虽小，但成矿地质条件较为特殊。
youdao
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The scale is small, but ore-forming geological conditions are of special.
该规模虽小，但成矿地质条件较为特殊。
youdao