幸福的关键在于更良好的人际关系，更丰富的知识，但是，健康才是最为重要的。
The key to happiness lies in better relationships, knowledge and above all health.
健康的人际关系是通往幸福的关键之一。
Healthy personal relationships are one of the keys to happiness.
其次，良好的人际关系可以帮助人们过上幸福的生活。
Secondly, a good interpersonal relation can help people live a happy life.
其次，良好的人际关系可以帮助人们过上幸福的生活。
Secondly, a good interpersonal relation can help people live a happy life.
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