archipelago

The archipelago comprises over seventeen thousand islands, making it the world's largest island nation by number.该群岛由一万七千多个岛屿组成，这使其按岛屿数量计算成为世界上最大的群岛国家。

Rising sea levels pose an existential threat to low-lying archipelagos in the Pacific and Indian Oceans.海平面上升对太平洋和印度洋的低洼群岛构成了生存威胁。