Mudslide 泥石流
mudslide-stricken region 泥石流受灾地区
geological disasters 地质灾害
secondary disaster 次生灾害
barrier lake 堰塞湖
upper reaches 上游河段
the water level of the lake 湖水水位
范文一：
One Joozone's possible version：
On Aug 7, 2010,a powerful mudslides damaged houses in the landslide-hit Zhouqu County, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province.
2010年8月7日，甘肃甘南藏族自治州舟曲县发生特大泥石流。
I fell very distressed that when I saw the pictures about mudslide-stricken region.The whole villages were wiped out by the terrible Mudslide. Hundreds of people lost thei
