九段沙，一个刚刚熟悉的名字，一片依然陌生的土地。东濒东海，西接长江。东西长约５０公里，南北宽约１３公里，吴凇０米高程以上面积有１４５平方公里，由江亚南沙、上沙、中沙、下沙四个沙洲组成。“８０年代始，每到秋冬枯水季节，开始露出海面呈小岛状横亘在口门附近”（ Jiudu sand, a just-familiar name, a still unfamiliar land. East Bin East China Sea, west of the Yangtze River. Things about 50 kilometers long, north-south width of 13 km, Wu Mi 0 meters above the elevation of 145 square kilometers, from the Jiangnan Nansha, on the sand, sand, sand, sand formation of the four. “The beginning of the 80’s, every autumn and winter dry season, began to reveal the island was lying in the island near the door” ((