the sources of sand-dust storm
...沙源，防治对策 [gap=1377]ming preconditions and reasons, Circumstance of disaster, Occurrence regularity, The sources of sand-dust storm, Countermeasure ..
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the sources of sand-dust storm
沙尘暴的来源
以上为机器翻译结果，长、整句建议使用 人工翻译 。