幸福感就消失
Happiness disappears.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
怀特说，他的团队想知道生活在绿化较好的城市地区是否会对人们的幸福感产生持久的积极影响，还是说这种影响会在一段时间后就消失。
White said his team wanted to see whether living in greener urban areas had a lasting positive effect on people's sense of well-being or whether the effect also disappeared after a period of time.
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