柯林斯詞典coastline /?k??st?la?n/ (coastlines) 1. N-VAR A country's coastline is the outline of its coast. 海岸線 This is some of the most exposed coastline in the world. 這是世界上最無遮蔽的海岸線。 返回 coastline劍橋詞典the particular shape of the coast , especially as seen from above, from the sea , or on a map （尤指從空中、海上或地圖上看到的）海岸線 返回 coastline