If you think life is wonderful and expect it to stay that way, then you may have a good chance of living to a ripe old age, at least that is what the findings of a new study suggest.
如果你认为生活是美好的，并且希望它一直如此，那么你很有可能会活到高龄，至少一项新研究的结论表明如此。
When he's having a really good presentation, the feeling is that if you don't buy the new thing your life will be worse for it.
要是他有一个非常棒的演示的时候，你就会觉得如果不买他的新产品，个人生活就会降低一个档次。
Some of the sociologists, psychologists and demographers who study this new life stage see it as a good thing.
一些研究这一新的生活阶段的社会学家、心理学家和人口统计学家把这样现象看成是一件好事。
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