it's a small picture with teeth around it.it has no feet.but it can travel around the word.what

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• 猜英语谜语it's like a bird,but has no feather .it's like a dragonfly,but has no legs .it can fly in the sky .and run on the ground.what is it?what is it that when once lost,you can never find again?it's a small picture with teeth around it.it has no feet ,but it can travel around the world ,what is it?I have cities but no houses;forests but no trees;rivers without water.what am if youhave it,you wangt to share it.if you share it,you don't have it.what is i
• it's a small picture with teeth around it.it has no feet.but it can travel around the word.what
• 谜语It's a small picture with teeth around it.It has no feet,but it can trave around the world.
• it's a small picture with teeth around it.it has no feet.but it can travel around the word.what
• 谜语It's a small picture with teeth around it.It has no feet,but it can trave around the world.急用.
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