你可以想象它按照可预测的轨道围绕太阳旋转。
You can visualize it revolving around the sun in a predictable orbital pattern.
天文学家早就认为，几大行星的轨道是可以预测的。
Astronomers had thought that the orbits of the planets were predictable.
客流预测是轨道交通建设的重要基础工作。
Flow prediction is an important item in the construction of rail transit.
客流预测是轨道交通建设的重要基础工作。
Flow prediction is an important item in the construction of rail transit.
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