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Art created by Australian Aboriginal1 people used organic carbon-free pigments2, but wasp3 nests above or below the art can be used for radiocarbon dating that supplies boundaries for the age of artworks.
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1
aboriginal
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adj.(指动植物)土生的,原产地的,土著的 | |
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pigments
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n.(粉状)颜料( pigment的名词复数 );天然色素 | |
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3
wasp
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n.黄蜂,蚂蜂 | |
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