These two properties make opalescent film an obvious material for currency.
这两种特性使得这种乳白色薄膜成为制造纸钞的绝好材料。
Pearls in nature come in white, ivory, pink and black with an opalescent glow.
而天然珍珠是白色、象牙色、粉色或黑色的，带有乳白色的光泽。
Pearls in nature come in white, ivory, pink and black with an opalescent glow.
而天然珍珠是白色、象牙色、粉色或黑色的，带有乳白色的光泽。
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