Guest
Record your races with a typeracer account:
Create Your Account- Save your race history and scores.
- Customize your profile and racecar.
- It’s free, why not?
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起初，他们曾试图寻找保持安静。毕竟，他们并没有绝对肯定这是一个外星人的信息。早产的或错误的公布将是一个公共关系灾难。
— Contact (联系方式)
 (book)
by Carl Sagan
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| Language: | Chinese |
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