The marginal tax rate on some production is as much as 80%.

一些产品的边际税率竟高达80%。

Inequality is not impervious to government policy, but higher marginal tax rates are not the only or the best way to address it.

社会不公不仅仅影响政府政策，而且征收较高边际税率既非唯一也非最佳解决之道。

Critics also point out that the US economy has grown in some periods when the top marginal tax rates were as high as 90 percent.

批评人士还指出，美国经济在最高边际税率高达90%的某些时期有所增长。

This benefit, which he estimates would cost $290bn annually, should be funded primarily through a top marginal tax rate of 50% on incomes over $250,000.

他估计这项福利需每年支出2900亿美元，资金应主要来自对年收入超过25万美元的人按最高的50%边际税率征税。

Indeed, the third argument for raising more money from the rich is that it can be done not by increasing marginal tax rates, but by making the tax code more efficient.

的确，针对政府从富人那收取更多钱的办法还有第三种：可以通过让免税政策更加有效来获得，而不是提高边际税率。