坐飞机旅行将会变得非常便宜，不仅可以在陆地上空飞行，而且还可以飞到海上甚至进入太空。
It'll be cheap to travel everywhere by plane, not only over land, but also over the sea or even into space.
坐飞机旅行将会变得非常便宜，不仅可以在陆地上空飞行，而且还可以飞到海上甚至进入太空。
It'll be cheap to travel everywhere by plane, not only over land, but also over the sea or even into space.
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