名词
中文翻译：Unknown
同义词：
['storm water diverter', 'stormwater retention system', 'rainwater harvesting system']
例句：
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1. Thecity has installed several water-retaining walls to prevent flooding during heavy rainfall.
该市已安装了几座保水墙，以防止大雨期间发生洪水。
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2.The construction of the water-retaining wall is expected to reduce the frequency of floods in this area.
建造保水墙预计将减少该地区洪水的频率。
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3.The design of the water-retaining wall was based on the local topography and climate conditions.
保水墙的设计基于当地的地形和气候条件。