They were not so much islands as sandbanks .

与其说他们是岛屿，不如说是沙洲更合适。

The floodwatersbuilt up sandbanks and infused the river with sediment .

洪水建立起了沙洲，向河水中注入沉积物。

Relative sea level changes and variational trends of the jiangsu redial sandbanks .

相对海面变化与江苏中部辐射沙洲的变化动态。

Along with the sea level rise , the offshore sandbanks could adapt themselves to the changing dynamic coditions by appropriate adjustments .

随着海面上升,岸外沙洲可以做出适当调整以适应逐渐变化的动力条件。

The lagoon that surrounds venice long guaranteed its safety from invaders when a threat materialized , venetians would pull up the buoys marking navigable channels , leaving their enemies floundering in a bewildering maze of sandbanks , mud flats and treacherous shoals .

长久以来，环绕威尼斯的礁湖一直保护这里不受外敌侵犯当危险出现时，威尼斯人会撤走指示航道的浮标，把敌人留在迷宫般扑朔迷离的沙洲之中，与肮脏的淤泥和危险的暗礁为伴。