科研之友
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<正>山林间肆虐的野火往往会持续数日,难以扑灭。它是怎么发生的?又为什么难以控制呢?What is a wildfire?A wildfire is also known as a wildland fire,forest fire,grass fire,or hill fire.It is an uncontrolled fire that often occurs inwildland areas.It burns down not only trees but houses and farmlands.Wildfires often begin secretly.When people discover them,they are too big to put out.
