英语翻译
问题描述：
英语翻译
Why are old people happier?Some scientists suggest older people may expect life to be harder and learn to live with it,or they’re more realistic abour their goals ,only setting ones that they know they are achieve .But Carstensen thinks that with time running out,older people have learned to focus on things that make them happy and let go of those that don’t.
答
为什么老年人更开心?一些科学家认为年老的人也许期望生活更艰难,然后慢慢适应它,或者他们对于目标更现实,仅仅树立一个他们认为自己能够实现的目标.但是Carstensen（人名）认为随着时间的流逝,老年人已经学会把注意力集中在那些使他们开心的事上面,至于那些不开心的事,不会放在心上.
意译就是这样了...