coastlinen.海岸线
coastn.海岸;海滨
coastersn.杯垫;航海者(coaster复数)
coaster hub三飞
coaster car滑车
coaster gate定轮闸门
coaster wagon滑坡玩具车
coaster board填充用纸板
coaster braken.倒刹车
coaster trade[经] 沿海贸易