晨侧的磁场起伏（或湍动）相当活跃，而昏侧相当稳定；

The dawn side is very active in the fluctuations or turbulences of magnetic field, but the dusk side is stable;

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晨侧的磁场起伏（或湍动）相当活跃，而昏侧相当稳定；

The dawn side is very active in the fluctuations or turbulences of magnetic field, but the dusk side is stable;

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