a thing shaped like a shelf, especially a piece of rock sticking out from a cliff or from the edge of a mass of land under the sea （悬崖上或海底）突出的岩石；陆架；陆棚
the continental shelf
大陆架
a thing shaped like a shelf, especially a piece of rock sticking out from a cliff or from the edge of a mass of land under the sea （悬崖上或海底）突出的岩石；陆架；陆棚
the continental shelf
大陆架