最近的研究结果表明，五颜六色的琥珀可能是由几种松柏科植物产的树脂形成的。
Recent scientific studies indicate the probable existence of several resin producing coniferous trees that may account for the variations seen in the colour of amber.
最近的研究结果表明，五颜六色的琥珀可能是由几种松柏科植物产的树脂形成的。
Recent scientific studies indicate the probable existence of several resin producing coniferous trees that may account for the variations seen in the colour of amber.
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