基本解釋賽夫沙丘(順著風向的長沙丘)同根派生 seif相關(guān)詞英漢例句Longitudinal or seif dunes are dunes that are parallel to a strong wind that blows in one general direction.縱向或者賽夫沙丘是與強風平行的沙丘，風總是以相同方向刮過。seif更多例句