1·Once a natural levee alluvial flood, it will generate a new cross-flow.
天然堤一旦被洪水冲积，就会产生新的叉流。
2·The main sedimentary microfacies comprise distributary channel, mouth bar, distal bar, blanket sand, natural levee and crevasse splay.
主要沉积微相为水下分流河道、河口坝、远砂坝、席状砂、天然堤、决口扇等。
3·The natural levee, crevasse splay and overbank sand are difficult to be effective reservoir for their content of mud-bearing silt, silty mud and unmixed mud.
天然堤、决口扇、溢岸砂多为含泥粉砂、粉砂质泥和纯泥，很难成为有效储层。
4·"One of our wildlife managers even spotted deer and coyotes" -natural enemies - "standing on the same levee together."
我们中的一个野生动物管理员甚至看到鹿和土狼——这对天敌——一起站在同一块防洪提上。
5·The production levee changes the natural law of flood evolution.
生产堤的存在改变了洪水正常的演进规律；