常见例句The north is the alluvial plain of Huanghe, the Quaternary deposition is diluvian sand and soil . 中部爲山前傾斜平原區，第四系厚度從南曏北變厚，第四系爲沖洪積形成的粘性土，下部基巖爲奧陶系灰巖和第三系巖漿巖；Diluvi 迪盧維 返回 diluvian