From knowing the diameter of the Earth's orbit and the apparent angular movement of the star, we can calculate the distance to it.
在知道了地球轨道的直径和恒星变化的角度，我们就能计算出它的距离。
From knowing the diameter of the Earth's orbit and the apparent angular movement of the star, we can calculate the distance to it.
在知道了地球轨道的直径和恒星变化的角度，我们就能计算出它的距离。
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