科学家关注联盟陈述，800颗运行的卫星在轨道上，美国自己的超过400颗，而俄国有90颗和中国35颗。

The Union of Concerned Scientists states that, of the 800 active satellites in orbit, the us owns more than 400, while Russia has 90 and China 35.

youdao

科学家关注联盟陈述，800颗运行的卫星在轨道上，美国自己的超过400颗，而俄国有90颗和中国35颗。

The Union of Concerned Scientists states that, of the 800 active satellites in orbit, the us owns more than 400, while Russia has 90 and China 35.

youdao