一次性征税的英文：
lump sum tax

lump是什么意思：
n. 块；肿块；笨人
v. 混在一起；（使）结块；笨重地移动

A Lump Sum Rate of ...
费用合计…

What are the whisky and the lumps of coal for?
那些威士忌和煤块有什么用？

having lumps; not smooth and even in texture.
有块状的东西；质地不均匀。

sum是什么意思：
n. 总数，总和；算数；金额；要点
v. 合计；总结

There are spots in (or on) the sum
人孰无过

This is the sum of this book.
这就是这本书的要点。

A Lump Sum Rate of ...
费用合计…

tax是什么意思：
n. 税金；重负
v. 向…课税；使负重担；谴责

For information on taxes and filing, talk with a professional tax preparer or tax attorney.
想了解有关税收申报方面的信息,可与税务专家或者是税务律师联系。

Tax cheats have declined.
偷税逃税事件已有所减少。

They hoped for a modification of English taxes.
他们希望英国能减轻税收。