Amazon rainforest crosses a "tipping point" where extreme heat and lower rainfall makes the forest unviable - much of it burns and is replaced by desert and savannah.

亚马逊雨林将经历一个“转折点”，极端高温和雨水减少将导致其退化，大部分树木都将被烧毁并由沙漠和草原取而代之。

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The basic method of regulating rainfall sensor with the tow-point is outlined.

本文概述了用两点法校准雨量传感器的基本方法。

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Rainfall-runoff simulation is the very important technique for soil erosion, non-point source pollution, surface water balance calculation and some other study fields.

降雨径流模拟是土壤侵蚀、非点源污染、地表水量平衡计算等众多研究领域的非常重要的技术手段。

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By this point the sunshine in which the match started had given way to cloudy skies, a fairly strong wind and gentle rainfall, and break-point opportunities were few and far between.

BBC: Federer claims historic Paris win

At one point, 80 percent of the capital Manila was under water after experiencing the heaviest rainfall in 40 years.

CNN: More than 300 killed in path of deadly storm Ketsana