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来源:雅诚德英语网
It is estimated that less than five percent of the organic matter produced at the surface reaches the abyssal plains.
据估计,来自海面的有机物质到达海底时其营养物质剩余不到5%。
It is estimated that less than five percent of the organic matter produced at the surface reaches the abyssal plains.
据估计,来自海面的有机物质到达海底时其营养物质剩余不到5%。