Over a fifth of American children live in relatively poor households, earning less than half the national average household income.

多于五分之一的美国儿童居住在相对贫困的家庭，这些家庭的年收入不到全国家庭平均收入的一半。

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One gauge of that is that when poor children are adopted into upper-middle-class households, their I.Q. 's rise by 12 to 18 points, depending on the study.

托克·海姆研究中的一项测量表明，当贫困儿童被中上层家庭收养后，智商提高了12至18点。

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The report quantifies the economic losses to India, and shows that children and poor households bear the brunt of poor sanitation.

该报告量化了由此带给印度的经济损失，并指出儿童和贫困家庭是恶劣卫生条件的主要受害者。

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More a quarter of American children are being raised in single-parent households, most of them poor.

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Since 1979, the proportion of the poor who live in households containing children and no working adults, especially one-parent families, has climbed.

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The poverty rate for blacks fell to its lowest rate ever in 1998, though one in four black households (and nearly 40% of black children) are still poor.

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