常見(jiàn)例句雙語(yǔ)例句Three-dimensional diagram illustrating a river meander with a point bar being formed on one bank and erosion occurring on the other bank .對(duì)某河曲進(jìn)行說(shuō)明的三維示意圖，河的一岸正在形成曲流沙壩，另一岸正在受到浸蝕。 返回 river-bank erosion