mud-debris flow deposit

例句：

1. 1. The river has carved adeep gorge in the mountainside, leaving behind a mud-debrisflow deposit that is visible from a distance.
   这条河流在山壁上雕刻出一个深深的峡谷，从远处就能看到留下的泥砂流沉积物。
2. 2. The scientists used high-resolution satellite imagery to study themud-debris flow deposits andtheir impact on the environment.
   科学家们使用高分辨率的卫星图像来研究泥砂流沉积物及其对环境的影响。
3. 3. Themud-debris flow deposits arebelieved to have formed over millions of yearsdue to the constant movement of the earth's crust.
   据信，这些泥砂流沉积物是在数百万年的时间里由于地球地壳的持续运动形成的。