noun 下载 🔗分享 海岸线,海滨线 The shape, outline, or boundary of a coast. Examples : "The changing coastlines of Florida are threatened by rising sea levels. " 佛罗里达不断变化的海岸线正受到海平面上升的威胁。 geography environment ocean nature 与AI对话词汇游戏阅读练习