所得税等级的英文：
income tax bracket

income是什么意思：
n. 收入；收益；所得

IQC Incoming quality control
来料检验

Incoming fire has the right of way.
飞来的子弹有优先通行权。（挡它的道你就要倒大楣！）

He has a comfortable income.
他有充裕的收入。

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。

bracket是什么意思：
n. 括弧，括号；托架；类别，等级；阶层
v. 括在一起；把…归入同一类；把…分类；为…装托架

Delete the items in the bracket as appropriate.
删除括号中不适用的称谓。

They bracketed discussion off for a moment.
他们对问题暂停讨论。

The children were bracketed into groups.
孩子们被分成几类。