a long artificial mound of stone or earth; built to hold back water or to support a road or as protection
造句
As the permafrost has the trend of degradation because of the global climate wanning, the thermal stability of embankments in permafrost regions has received extensive attention. 由于全球升溫致使多年凍土呈退化趨勢，多年凍土地區路基的熱穩定性受到了廣泛地關注。