A progressive tax is far harder to administer than any flat tax.

困难在于，累进税的管理比单一税难得多。

youdao

My flat did this for ten days in September and we can now use a dongle. Harder than it sounds.

九月份，我的公寓断网十天。现在，我们可以用蓝牙适配器连网了。用起来比听起来难噢。

youdao

A progressive tax is far harder to administer than a flat tax is.

累进税比单一税更难管理。

youdao

"You take out the Xs and Os of the game, they just flat-out played harder than we did today, " Anthony said.

WSJ: Knicks feel they were outworked in Game 1 loss

BBC, the harder it becomes to justify the flat-rate licence fee (in all but name, a regressive tax) levied on all the country's television owners to pay for the corporation.

ECONOMIST: Digital follies

Folks were working harder and harder, but their wages or incomes, they were staying flat, sometimes even going down.

WHITEHOUSE: Remarks by the President at a Campaign Event