But a study of the north Atlantic and the Caribbean, just published in Science, suggests things are not getting worse.
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原因：西北大学开发的叙事科学软件，其专长是用机器生成新闻。
Here's why: Using software developed by Northwestern University, Narrative Science specializes in machine-generated stories.
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西北大学的科学家绘制了实际的社区地图。最值得一说的是他们绘制地图的手段非常巧妙，利用了
Researchers from Northwestern University have now mapped the country's de facto communities. And they did it in an ingenious way, using data from the Where's George project.
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