But certainly, the ancients is able to identify these colors from an intuitive visual.
但可以肯定，古人是能够从直观视觉上辨别这些颜色的。
In fact, the procedure to identify black, the other colors do not handle.
其实，程序只识别黑色，对其它颜色均不做处理。
In fact, the procedure to identify black, the other colors do not handle.
其实，程序只识别黑色，对其它颜色均不做处理。
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