专家指出,舟曲特殊的地质地貌,长期干旱,突降暴雨,都是这次地质灾害的成因。
zhuānjiā zhǐchū ,Zhōuqū tèshū de dìzhì dìmào ,chángqī gānhàn ,tū jiàng bàoyǔ ,dōu shì zhècì dìzhì zāihài de chéngyīn 。
The experts have pointed out that Zhouqu's special geological conditions and landforms, a long period of drought, and the sudden torrential rainfall were all contributing factors to this geological disaster.