On the back slopewater pressure in clay permeability of avoid by all means, time will take high moisture line, and even the water seepage scale expansion and danger.
切忌在背水坡用黏土压渗，云云会举高滋润线，乃至渗水规模扩张和险情加重。
2
The water had raced down the slope and scoured out the bed of a stream.
水顺着山坡流下来，冲刷出一条小河道。
《牛津词典》
3
All of the crabs were still on the continental slope, but some of them were in shallower water than any seen in 2007.