1·The Bangladeshi capital of Dhaka (with a population of 11.6m and rising) is built on alluvial terraces, exposed to flooding, earthquakes and rising seas.
孟加拉首都达卡(人口1160万，并程增长趋势)就建立在冲积台地之上，随时面临洪灾、地震以及海平面上升的危险。
2·At first light, I started my trek up an alluvial fan into an unnamed canyon in the Cottonwood Mountains.
天刚亮，我就从一片冲积扇区(峡谷山口的扇形沉积物)处开始了旅程，进入了卡顿·伍德山脉中的一个无名峡谷。
3·Downstream water flow slow, siltation of the alluvial soil more and more, forming a great many of the Delta islands.
下游水流缓慢，淤积的冲积土愈来愈多，形成一个有许多岛屿的巨大三角洲。
4·The water cuts the alluvial banks of the " lower " river into deep horseshoe curves.
河水把下游那些冲积的河岸冲成很深的马蹄形曲线。
5·Bangkok is surrounded by a vast, damp, alluvial plain, crisscrossed by a network of klong,.
曼谷为一个广阔潮湿的冲积平原所环绕，有纵横交错的运河网。