Happiness is your biggest enemy. It weakens you. Puts doubts in your mind.

幸福是最大的敌人，它让你软弱，让你心生怀疑。

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As the immune system weakens, it loses the ability to fight illnesses.

随着免疫系统的变弱，人体就逐渐失去了抗病能力。

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As the immune system weakens, it loses the ability to fight illnesses.

随着免疫系统的变弱，人体就逐渐失去了抗病能力。

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