常见例句雙語例句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.內陸架地貌主要有陸架堆積平原、水下堦地、古海岸線、古河道、小丘和坑窪群等； 返回 mamelon