Normally our autonomic nervous system is in a constant balance of sympathetic and parasympathetic.

通常我们的自主神经系统是在不断的平衡和副交感神经。

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Normally our autonomic nervous system is in a constant balance of sympathetic and parasympathetic.

通常我们的自主神经系统是在不断的平衡和副交感神经。

youdao