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来源：雅诚德英语网
Why do I believe in certain planets too far away to be observed directly through a telescope?
为什么我会相信望远镜能观察到过于遥远的行星？
Why do I believe in certain planets too far away to be observed directly through a telescope?
为什么我会相信望远镜能观察到过于遥远的行星？