N-VAR
海岸线
A country's coastline is the outline of its coast.
例句
This is some of the most exposed coastline in the world...
这里的海岸线属于世界上最无遮蔽的一段了。
Thousands of volunteers gave up part of their weekend to clean up the California coastline.
几千名志愿者放弃周末的部分休息时间，来清理加利福尼亚州的海岸。