sleep,cow,horse哪个可数?

sleep,cow,horse哪个可数? cow是否可数? cow sheep 可不可数? sheep.hen.cow.cow.lamb.goat.horse的意思是什么 A cow is as strong an animal as a horse. sleep作名词可数么 cow cow（牛）是可数名词还是不可数名词? have a good sleep中sleep是可数名词吗 yellow,window,snow,cow哪个发音不同 cow sheep chicken dog 哪个是不可数? show flower town cow 哪个发音不同