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这些低养分的“海洋沙漠”的扩张似乎是由于海洋表面温度上升引起的。

These low-nutrient “marine deserts” appear to be expanding due to rising ocean surface temperatures.

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此外，单纯地扩张地球表面的耕地面积会带来森林退化，这对环境有着严重危害。

Moreover, simply expanding the area of the earth's surface that is under cultivation is likely to cause deforestation, which is environmentally harmful.

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