luò shuǐ 
		to fall into water
to sink
overboard
fig. to degenerate
to sink (into depravity)
to go to the dogs
		 
		
		
		
		
			 
		
				
		
			dǎ luò shuǐ gǒu 
		lit. to beat a drowning dog (idiom)
fig. to pulverize an (already defeated) enemy
to hit sb when he's down
		 
		
		
														
		
		
					
				
		
			luò shuǐ gǒu shàng àn 
		like a dog who fell in the river and climbs out—shaking all over