What goes out but never comes back?是什么?

What goes out but never comes back?是什么? What goes through a door,but nevergoes in or comes out? 英语翻译10.What is yours but is used by others more than by yourself?11.what goes through a door but never comes in or goes out?12.what runs all around the ground but never movies? what comes down but never goes up- what goes up but never comes down 英语脑筋急转弯!1、what ship has two mates,but no captain?2、what is easy to get into,but hard to get out of?3、what kind of dress can never be worn?4、what flies around all day but never goes anywhere?5、what goes up and down,but never mo 英语IQ题：what goes up but never comes down? what comes down,but never goes up?先英翻中再解题 what goes up and down but doesn't move? 是什么意思? what goes up ang down but doesn't move? what alway goes up,but never come down? what goes all over the house but touch nothing What goes all over the house,but touches nothing?智力题 what man always opens doors but never goes inside? what goes up but never comes up猜一猜 what goes 请告诉我这些的意思和答案（脑筋急转弯） how can you make money out of a monkey?which dogs never bark?what goes up but never come down?what has a head but no brain?what is the end of the world?what runs but no walks? 脑筋急转弯：1.Why does time fly?脑筋急转弯：1.Why does time fly?2.How can you make money out of a monkey?3.What dogs never bark?4.What goes up but never comes down?5.What has a head but no brain?6.What is the end of the world?7.What runs