Some 900 active satellites are in orbit, and nearly half of them are American.

在轨道活跃900颗人造卫星，而且几乎它们一半是美国的。

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Some 900 active satellites are in orbit, and nearly half of them are American.

在轨道活跃900颗人造卫星，而且几乎它们一半是美国的。

youdao