Their explanation: a faint, far-off companion star to the Sun was sending down a rain of comets when it reached just the right point in its orbit.

他们的解释是这样的：遥远的地方，太阳有一颗微弱的伴星，当它到达轨道的某个定点时，就会产生大量彗星。

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Their explanation: a faint, far-off companion star to the Sun was sending down a rain of comets when it reached just the right point in its orbit.

他们的解释是这样的：遥远的地方，太阳有一颗微弱的伴星，当它到达轨道的某个定点时，就会产生大量彗星。

youdao