"Living pigments" is a metaphorical device to refer to the fact that the pigments of the original paint have been replaced by pigmented micro-organisms.
“活颜料”是个比喻，意味着绘制岩画最初使用的颜料已被画作表面微生物取代。
A pigment is the substance that gives an object its color. Grass, apples, hair, and paint, for example, are all pigmented.
色素是赋予物体颜色的物质。比如，草、苹果、头发、颜料都有色素。
It doesn't make any common sense at all to apply a pigmented or colored wax on top of a paint that is as clear as the windshield you look through.
填加色素，这不是常识或有颜色的顶部与你所看到的挡风玻璃的颜色一样。
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