China has sent up many man-made satellites.
中国已发射了许多人造卫星。
Man-made satellites have been sent up into space by many countries.
人造卫星已经被很多国家发射到了太空。
So far, man-made satellites have been sent up into space by many countries.
到目前为止，许多国家已经向太空发射了人造卫星。
Man - made satellites have been sent up into space by many countries.
许多国家已经向太空发射了人造卫星。
Man - made satellites have been sent up into space by many countries.
许多国家已经向太空发射了人造卫星。
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