短语词组短語littoral l drift 沿岸沉積物流沿岸漂移littoral barrier drift coast 有漂沙的沿岸地帶littoral barrier drift 沿岸泥沙流littoral drift sand [水利]沿岸漂沙zone of littoral drift 海岸漂流帶loss function of littoral drift 漂砂損失Drift littoral 海岸漂砂 返回 littoral drift