This month the World Bank issued its annual list of countries by income category: rich, middle, poor.

这个月世界银行发布了一份清单：它将国家分为富裕、中等、贫穷几个级别。

youdao

Then,in nineteen eighty-two, they took a further step toward helping poor and middle-income people.

VOA: special.2011.01.30

While populist policies, while prime minister led to support from the rural poor, Bangkok's middle class and urban elite accused him of corruption and abuse of power.

VOA: standard.2010.04.03

Health Affairs editor Susan Dentzer says the rapid advance of information technology, along with declining prices, presents what she calls a spectacular opportunity in poor and middle-income nations.

VOA: standard.2010.02.24

The gap between the ultra rich and the middle class and poor is enormous.

FORBES: I'm not Democrat or Republican: I Vote Entrepreneur

The marked reversal in tax revenue shown in the figure did not come disproportionately from any economic group (especially the middle class and poor).

FORBES: Tax Rates, Tax Revenues And The GDP

But this statement ignores the more important question: How would the middle class and poor be affected by the higher tax rates that Buffett advocates.

FORBES: Taxpayers Should Be Leery Of Warren Buffett's Faux Noblesse Oblige