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- 地球只是宇宙中众多星球中的一个。
The Earth is only one of the numerous planets in the universe.
- 地球是绕轴旋转的吗？
Does the earth rotate on an axis?
- 火箭绕地球运行一周后返回基地。
The rocket did one circuit of the earth and returned to base.
- 地球、太阳和月亮都是天体。
The earth, sun and moon are spheres.
- 现在没有人会对地球是圆的这一事实提出异议。
Nowadays no one will challenge the fact that the earth is round.
- 哥白尼论证了地球绕着太阳转。
Copernicus reasoned that the earth revolved around the sun.
- 很多种类的动物现在已经从地球上绝迹了。
Many types of animals have now vanished from the earth.
- 我们的地球在太空中运行。
Our earth moves through space.
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