To obtain one ounce of Tyrian purple dye, she had her servants soak 20, 000 Purpura snails for 10 days.

为了获得一盎司提尔紫色染料，她让仆人将20 000个紫癜蜗牛浸泡10天。

Some example are indigo, from the indigo plant, and Tyrian purple , the imperial purple the Romans prepared from a shellfish native to the Mediterranean.

例如靛蓝，来自靛蓝色植物。泰尔紫也叫帝紫，古罗马人从原产于地中海的贝壳类动物制作的。