名词
中文翻译：海岸线下降
同义词：
['coastal recession', 'coastal incursion']
例句：
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1. The coastline has been experiencing a significant recession due to the rising sea levels.
由于海平面上升，海岸线正经历显著的衰退。
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2. The coastal communities are facing the threat of coastal incursions from eroding cliffs.
沿海社区正面临着因侵蚀悬崖而遭受的海岸侵袭威胁。