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%。

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The birthplace of the Chinese civilization is the Central Plains where the climate has less variation than the Mediterranean or the Near East.

与地中海和近东地区相比，中国文明的发祥地中原地区的气候类型更加有规律可寻。

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To avoid the rain: in most of the Northeast, Midwest, and Plains, it rains less in the spring than in the height of summer, but in many Southern states, it rains less in the summer than in the spring.

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Other, more affordable, less regulated and often more economically dynamic places like Texas and the Great Plains may realize even greater gains.

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