The proportion of single parent families varies between different income groups.
单亲家庭比例在不同收入群中各不相同。
Better health outcomes in high income groups tell us that the answer is no.
高收入阶层更好的健康结果告诉我们，答案是否定的。
This has made the lives of people, particularly those low income groups more difficult.
去年下半年以来，物价上涨过快，给群众生活，特别是低收入群体带来很大的困难。
This has made the lives of people, particularly those low income groups more difficult.
去年下半年以来，物价上涨过快，给群众生活，特别是低收入群体带来很大的困难。
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