Pluto 's orbit around the sun is unusual.

(冥王星)围绕太阳运转的轨道是非同寻常。

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NASA will rely on the Russian space agency to ferry U. S. astronauts to orbit.

NASA将依靠俄罗斯宇航局来将美国宇航员送入轨道。

youdao

NASA will rely on the Russian space agency to ferry U. S. astronauts to orbit.

NASA将依靠俄罗斯宇航局来将美国宇航员送入轨道。

youdao