常见例句双语例句In the inner shelf, the main geomorphic types have the accumulational plain, shoreface terrace, ancient costal line, ancient stream channel, mamelon and pit-and-pots.内陆架地貌主要有陆架堆积平原、水下阶地、古海岸线、古河道、小丘和坑洼群等； 返回 mamelon