The expression was first used in America at the beginning of the twentieth century.
人们第一次使用这个短语是在二十世纪初期时的美国。
Poverty in America has grown persistently throughout the twentieth century.
美国的贫困现象在整个20世纪持续增长。
Poverty in America has grown persistently throughout the twentieth century.
美国的贫困现象在整个20世纪持续增长。
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