你的无数个细胞含有数百中化学成分，每一种都精心调节，在你的具有自主性的神经系统下被保持平衡来确保你的健康和长寿。
Each of your billions of cells contains hundreds of chemicals, each of which is carefully regulated and kept in balance by your autonomic nervous system to ensure your health and longevity.
你的无数个细胞含有数百中化学成分，每一种都精心调节，在你的具有自主性的神经系统下被保持平衡来确保你的健康和长寿。
Each of your billions of cells contains hundreds of chemicals, each of which is carefully regulated and kept in balance by your autonomic nervous system to ensure your health and longevity.
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