Estimates from the 1970s and 1980s, which suggested much lower income persistence, were dogged by poor data.

上世纪70年代和80年代的估计显示，世代之间的收入连续性要低得多，这是受到了数据质量不佳的影响。

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Past oppression probably counts for much of the persistence of black poverty: in 1967, according to the census, the average black person had an income that was just 54% of the average white one.

过去受的压迫使得现在的黑人持续的贫困：在1967年，根据人口普查资料，平均的黑人收入只有平均的白人收入的54%。

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Profits persistence is one of the important income quality indicators, which also can measure market competition intensity.

赢利持续性是衡量公司利润质量的重要指标之一，也是衡量市场竞争强度的指标。

youdao

Past oppression probably counts for much of the persistence of black poverty: in 1967, according to the census, the average black person had an income that was just 54% of the average white one.

ECONOMIST: Forty years after the murder of Martin Luther King