名词
中文翻译：重力排水
同义词：
['gravitational drainage', 'gravity-driven drainage']
例句：
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1.The construction of the new highway will significantly improve the gravity drainage system in the area.
修建新的高速公路将显著改善该地区的重力排水系统。
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2. The engineers used a gravity drainage system to treat the underground water.
工程师们使用了重力排水系统来处理地下水。
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3.The rainwater was collected and then discharged through a gravity drainage system.
雨水被收集起来，然后通过重力排水系统排放出去。