介绍:
科大刘畅讲解第64句。64. The pigmentation of a
pearl is influenced by the type of oyster in which it develops and by the
depth, temperature, and the salt content of the water in which the oyster
lives.
64.珍珠的色泽受到作为其母体牡蛎种类及牡蛎生活水域的深度，温度和含盐度的制约。
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