When the batch of discus matured, it was found that those raised in water with a high concentration of iron and magnesium in the water has the reddest colour.
当批铁饼成熟了，发现在与铁的高浓度和镁的水中上升的那些在水中有红颜色。
When the batch of discus matured, it was found that those raised in water with a high concentration of iron and magnesium in the water has the reddest colour.
当批铁饼成熟了，发现在与铁的高浓度和镁的水中上升的那些在水中有红颜色。
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