The fine results have been acquired when this filtering method is used to process the multi-sized inlay ERTS photograph of Xianshuihe River zone.

利用这种滤波方法处理鲜水河地区多幅镶嵌卫星照片，取得了良好效果。

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These rivers and river systems are known as "exogenous" because their sources lie outside the arid zone.

这些河流和河川系统被称作“外源河流”，因为它们的源头位于干旱地区之外。

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But the arrival of seasonal rains has pumped new life into Dolo, a river town on the Ethiopian border that's in an area that was considered a famine zone until last week.

但季节性雨水的到来使多洛有了一些生机。这个埃塞俄比亚边境的沿河小镇直到上个星期还在饥荒区内。

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After public pressure and leadership from a local councilman and the corps' commander, officials at several levels of government created the Los Angeles River Pilot Recreation Zone along a lush segment that features tree-lined islands, vistas of the San Gabriel Mountains and abundant wildlife such as herons, egrets, hawks and kingfishers.

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When teachers guide students in gaining awareness that industrial agriculture writ large, for example, results in chemical runoff from nitrogen-based fertiliers in the Mississippi River that in turn creates a massive dead zone in the Gulf of Mexico so large that it is visible to the human eye through satellite distant imaging, students are able to grasp the basis for sustainable agriculture.

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