They want Latvia to dump its flat tax for a more progressive system.

他们希望拉脱维亚抛弃单一税，转而实施累进税。

youdao

PAUL KRUGMAN: a flat tax would either (a) be much higher for most people than the tax they currently pay or (b) raise much less revenue than the current system.

保罗·克鲁格曼：统一的所得税率(a)对于大多数人来说会比现在付的税更高或者(b)比现行制度征收少得多的税收。

youdao

Russia overhauled its progressive tax system in 2001, dropping the top rate from 45% in 1999 to a flat 13%.

2001年俄罗斯喊停其颇为激进的税务体系，把1999年起实行的最高税率由45%降低至13%。

youdao

The tax rate could very well be a flat tax system of say 20% gross income.

FORBES: Guest Post: Tax Reform

The current tax code must be scraped and replaced with a simple, non political, transparent flat tax system.

FORBES: Tax Talk 2012: Tom Miller

Sensibly, President Putin has thrown out many of these exactions and given Russia a single-rate, flat tax system.

FORBES: Fact and Comment