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.

辞典例句

Boys everywhere , doing everything , ending expose tile, lower river catch fish, climb trees, full yard chase.

男孩们无处不在, 无所不为,上房揭瓦 、 下河摸鱼 、 爬树 、 满院子追逐.

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