词汇	impervious foundation
释义	impervious foundation 不透水地基
随便看	returnings returning scrap returning security money returning site control Returning society returning spring Returning stagnantly returning stalks into field Returning straw into field Returning straws to soil returning straw to farmland machine Returning straw to field returning straw to field directly returning straw to land returning straw to soil returning telephone ring Returning the day after tomorrow.Thanks returning the society Returning the woodland forestation returning to Returning to countryside returning to hometown and pioneering returning to hometown for entrepreneurial returning to Marx returning to nature