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When you grow up， what will the world be like？ Scientists and thinkers have puzzled over that question. Hundreds of years ago， writers imagined a future where people lived easy lives， doing what they wanted to， buying what they wanted without money.
当你长大后，世界会是什么样呢？科学家和思想家们对这个问题感到困惑。数百年前，作家们想象着一个人们过着轻松生活，做他们想做的事情，买他们想要的东西而不用付钱的未来。
Before you were born， scientists predicted1 that the earth would soon be covered in ice. Others predicted that the ice will all melt.
在你出生之前，科学家预测地球将很快被冰覆盖，其他人则预测冰将融化。
Those predictions did not come to pass. The truth is that the future is a mystery2. And here’s the exciting part： You will live there one day！
那些预测没有成真。事实是，未来是一个谜。令人兴奋的是：有一天你会生活在那里！
When you are a grown-up， what will life be like？ No one can be sure， but many very smart people have some interesting ideas.
当你长大时，生活将是什么样的？没有人可以肯定回答，但许多非常聪明的人产生了一些有趣的想法。
3D Printed Food
3D打印的食物
Feel like a pizza？ Print one！Yes， in the future， when you need to feed your kids， you might cook up a pizza on a 3D printer. NASA is currently experimenting with 3D food print-ers to use in space.
想吃披萨？打印一个！是的，将来，当你需要喂孩子时，可能会在3D打印机上做披萨。美国宇航局目前正在试验3D食品打印机，以便在太空中使用。
Here on earth， 3D printers are already being used， but they are very expensive and don’t prepare a lot of different foods. By the time you are a grown-up， 3D food printers will be as com-mon as microwave ovens. And you’ll be able to add extra cheese.
在地球上，3D打印机已经被使用，但是它们非常昂贵，而且准备不了太多不同的食物。当你长大时，3D食品打印机会像微波炉一样普遍。而且你还能够添加更多的奶酪。
Your Home Will Be Your Doctor
你的家将成为你的医生
Paying for health care is expensive. When you grow up， you will pay taxes to pay for that care. To help keep costs low， your home will be filled with tools that keep an eye of your health. Your toothbrush will test your saliva3. Your toilet will test your deposits4.
支付医疗费用很昂贵。长大后，你需要纳税才能支付这笔费用。为了帮助降低花费，你的家将充满了关注你健康的工具，你的牙刷会测试唾液，厕所会测试沉积物。
Of course， your watch will also tell you how your heart is doing. All of this testing will help find health problems before they become too serious. They will tell you when you need to see a human doctor and when you just need to take a breath and relax.
当然，你的手表也会告诉你你的心脏怎么样。所有这些测试都有助于在问题变得严重之前找出健康问题。他们会告诉你什么时候需要看医生，什么时候只需要吸一口气，然后放松。
When You Do Need a Doctor
当你需要医生时
In the future， you might get treated by tiny robots of a robot suit.
在未來，你可能会接受机器人配套的小型机器人的治疗。
当你长大后，世界会是什么样呢？科学家和思想家们对这个问题感到困惑。数百年前，作家们想象着一个人们过着轻松生活，做他们想做的事情，买他们想要的东西而不用付钱的未来。
Before you were born， scientists predicted1 that the earth would soon be covered in ice. Others predicted that the ice will all melt.
在你出生之前，科学家预测地球将很快被冰覆盖，其他人则预测冰将融化。
Those predictions did not come to pass. The truth is that the future is a mystery2. And here’s the exciting part： You will live there one day！
那些预测没有成真。事实是，未来是一个谜。令人兴奋的是：有一天你会生活在那里！
When you are a grown-up， what will life be like？ No one can be sure， but many very smart people have some interesting ideas.
当你长大时，生活将是什么样的？没有人可以肯定回答，但许多非常聪明的人产生了一些有趣的想法。
3D Printed Food
3D打印的食物
Feel like a pizza？ Print one！Yes， in the future， when you need to feed your kids， you might cook up a pizza on a 3D printer. NASA is currently experimenting with 3D food print-ers to use in space.
想吃披萨？打印一个！是的，将来，当你需要喂孩子时，可能会在3D打印机上做披萨。美国宇航局目前正在试验3D食品打印机，以便在太空中使用。
Here on earth， 3D printers are already being used， but they are very expensive and don’t prepare a lot of different foods. By the time you are a grown-up， 3D food printers will be as com-mon as microwave ovens. And you’ll be able to add extra cheese.
在地球上，3D打印机已经被使用，但是它们非常昂贵，而且准备不了太多不同的食物。当你长大时，3D食品打印机会像微波炉一样普遍。而且你还能够添加更多的奶酪。
Your Home Will Be Your Doctor
你的家将成为你的医生
Paying for health care is expensive. When you grow up， you will pay taxes to pay for that care. To help keep costs low， your home will be filled with tools that keep an eye of your health. Your toothbrush will test your saliva3. Your toilet will test your deposits4.
支付医疗费用很昂贵。长大后，你需要纳税才能支付这笔费用。为了帮助降低花费，你的家将充满了关注你健康的工具，你的牙刷会测试唾液，厕所会测试沉积物。
Of course， your watch will also tell you how your heart is doing. All of this testing will help find health problems before they become too serious. They will tell you when you need to see a human doctor and when you just need to take a breath and relax.
当然，你的手表也会告诉你你的心脏怎么样。所有这些测试都有助于在问题变得严重之前找出健康问题。他们会告诉你什么时候需要看医生，什么时候只需要吸一口气，然后放松。
When You Do Need a Doctor
当你需要医生时
In the future， you might get treated by tiny robots of a robot suit.
在未來，你可能会接受机器人配套的小型机器人的治疗。