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.

至今在这里还可以见到久经风化、残缺不全的珠蚌遗骸，可以想见当年来采珠的繁忙景象。

Still can see here up to now long classics decency, misshapen not complete bead mussel remains, can infer is collected in those days bead busy picture.