处于中间阶层的人同期内实际收入有所下降，而在那些只有高中文凭的人当中，这一趋势尤为明显。
Those in the middle have seen their real incomes fall over the same period, precipitously so in the case of those with only high school qualifications.
在几个不同类型的社区中，中间阶层家庭收入现在比30年前要低。
In several different types of communities, median family income is lower now than 30 years ago.
（——求指点，译者）中间阶层女性的收入比男性快，从1910年的五分之二增长到2008年的五分之三。
The median female income has risen faster than the male median, growing from about two-fifths in 1960 to three-fifths in 2008.
（——求指点，译者）中间阶层女性的收入比男性快，从1910年的五分之二增长到2008年的五分之三。
The median female income has risen faster than the male median, growing from about two-fifths in 1960 to three-fifths in 2008.
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