According to the poll, 48% of people aged 30 or over say they expect to end up better off than their parents. But only 28% expect to end up in a different class.
该调查显示，在30岁以上(包括30岁)的人中，48%的人表示期望自己最终能比父母过得更好，但仅有28免的人期望自己最终能够处于和父母不同的阶级。
Most of the aged people selected walking and traditional physical exercises, the prevalence rate among different exercise ways was not significance.
多数老年人选择了步行和传统体育类项目，但不同运动方式间的患病率无差异。
Until late in the 20th century, most Americans spent time with people of different generations, Now middle-aged Americans may not keep in touch with old until they are themselves.
到二十世纪后期，大部分美国人都是几代人住在一起。但如今，中年美国人可能不和老年人在一起，直到他们自己变成了老人。
Until late in the 20th century, most Americans spent time with people of different generations, Now middle-aged Americans may not keep in touch with old until they are themselves.
到二十世纪后期，大部分美国人都是几代人住在一起。但如今，中年美国人可能不和老年人在一起，直到他们自己变成了老人。
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