皮尤研究机构的新研究显示过去20年期间，离婚率下降，但与此同时，结婚的人数也少了许多。
New studies by Pew Research show the divorce rate has declined over the past 20 years, but at the same time, fewer people are getting married.
但是过去的研究显示，多接触绿地可以减轻压力、增强体质、并能降低患抑郁症的风险。
However, past studies have shown that exposure to green space reduces stress, boosts health and makes us less vulnerable to depression.
研究显示在过去三年中那些日照较多地区的视觉问题发生率猛增。
The study shows a sharp increase in the incidence of vision problems in the sunny regions over the past three years.
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