2010年5月3日下午6点50分，甘肃省最西端的敦煌市，沙尘暴再次袭来，瞬间风力达6-7级，天色昏暗，整座城市笼罩在茫茫沙尘中。这是既4月27日甘肃黑沙暴后，短短6天内的再次袭击，整个风沙过程持续约1小时。

     自然向人类敲响了警钟！http://www/uc/myshow/blog/misc/gif/E___6801ZHE2SIGG.gif

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http://s4/middle/4251dddex85b002dcd423&690       沙暴过后。。。。。。