发亮，可能说明沿轨道运行的天体亮面正对着地球，就像月亮反射阳光那样。
Brightening would imply that the lighted-up side of an orbiting object is facing the Earth, as when sunshine reflects off the moon.
发亮，可能说明沿轨道运行的天体亮面正对着地球，就像月亮反射阳光那样。
Brightening would imply that the lighted-up side of an orbiting object is facing the Earth, as when sunshine reflects off the moon.
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