As well as rain gardens and creeks that drain and retain rainwater, the city has been equipped with a system of bioswales, which stretch for several kilometres in total.
除了雨水花园和排水和保留雨水的小溪外，这座城市还配备了生物沼泽系统， 总长数公里。
Bioswales
原声例句
未来世界建设
英语百科
Bioswale
（重定向自Bioswales）
Bioswales are landscape elements designed to remove silt and pollution from surface runoff water. They consist of a swaled drainage course with gently sloped sides (less than six percent) and filled with vegetation, compost and/or riprap. The water's flow path, along with the wide and shallow ditch, is designed to maximize the time water spends in the swale, which aids the trapping of pollutants and silt. Depending upon the geometry of land available, a bioswale may have a meandering or almost straight channel alignment. Biological factors also contribute to the breakdown of certain pollutants.
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