Once, we saw it was moving in a pattern consistent with an orbit.

有一次，我们看到它以与轨道一致的方式移动。

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Once the Soyuz began to orbit the Earth, the failures began.

当联盟号开始环绕地球的时候，失败随之降临了。

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Once the Soyuz began to orbit the Earth, the failures began.

当联盟号开始环绕地球的时候，失败随之降临了。

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