n. 排水系统；排水，排泄；排出的水，污水
drainage system排水系统，渠道系统；水系；引流装置
drainage area排水面积
1.Better roofs and drainage will help protect relics from weather damage and theft.
改善防雨遮檐和排水系统，帮助保护文物免受天气损害和偷盗。
2.The bricks were bedded in sand to improve drainage.
沙里埋入砖块，以改进排水系统。
3.Waterlogged soils occur in areas that are flat or have poor drainage.
涝渍土壤发生在地势平坦或排水不畅的地区。
4.At a given saturation nonwetting permeabilities for an unconsolidated porous medium are higher than the drainage permeabilities.
在给定的饱和度下，未固结的多孔介质的非润湿渗透率高于排水渗透率。
5.Bad drainage caused the land to be flooded.
排水不利容易使土地淹水。
6.To provide for drainage, you can use a recycled margarine container. Punch holes in the bottom for drainage.
为了方便排水，可以选择在再生黄油盒的底部钻几个洞作为种植的容器。
7.Hundreds of miles of drainage canals were built in the wetlands.
湿地上修建了数百英里的排水沟渠。
8.To provide for drainage, you can use a recycled margarine container. Punch holes in the bottom for drainage.
为了方便排水，可以选择在再生黄油盒的底部钻几个洞作为种植的容器。