You can in touch with Earth and Mars by space radio and space Internet.
你可以通过太空无线和太空互联网同地球和火星保持联系。
You can keep in touch with Earth and Mars by space radio and space Internet.
你可以通过太空无线和太空互联网同地球和火星保持联系。
You can keep in touch with Earth and Mars by space radio and space Internet.
你可以通过太空无线和太空互联网同地球和火星保持联系。
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