barbed drainage

例句：

1. 1. The city's new barbed drainage system isdesigned to improve water quality.
   该市的新带刺排水系统旨在改善水质。
2. 2. The constructionof the barbed drainage system was completedahead of schedule.
   带刺排水系统的建设提前完成。
3. 3. The barbed drainage system effectively prevents mosquitoes from entering the area.
   带刺排水系统有效地阻止了蚊子进入该地区。