They just goof around, roll around on the floor and fight.他们整日就是瞎闹，在地上摸爬滚打。But was it, in fact, a hideous goof?但事实上这是否是个弥天大错？You'd goof things up good.你会把事情完全搞糟的....
用叉子把香蕉捣烂。Mash the bananas with a fork.你可以帮我把马铃薯捣烂.You can help mash up the potatoes for me.他把马铃薯捣烂后再吃.He beat the potato into a mash before eating it....