珠蚌不但更小，生命力更弱，受到污染的水会改变真珠质和珍珠的颜色。
Not only then are the smaller, less robust creatures but the pollution in the water changes the color of the nacre and changes the color of the pearl.
珠蚌不但更小，生命力更弱，受到污染的水会改变真珠质和珍珠的颜色。
Not only then are the smaller, less robust creatures but the pollution in the water changes the color of the nacre and changes the color of the pearl.
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