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在罗马帝国时期(公元前37年-公元476年),制造紫色染料非常困难。
During the time of the roman Empire (37 BC-476 AD), it was very difficult to make purple dye.
youdao
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在罗马帝国时期(公元前37年-公元476年),制造紫色染料非常困难。
During the time of the roman Empire (37 BC-476 AD), it was very difficult to make purple dye.
youdao