She refuses on principle to understate her income for taxation purposes.是什么意思？

She refuses on principle to understate her income for taxation purposes.

他出于道德上的动机,不愿为了少纳税而少报收入.

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

refuses

v. 拒绝，回绝( refuse的第三人称单数 )，推却，回绝，拒绝给（所需之物）；

例句
He refuses to compete on Sundays because of his religious beliefs.
出于宗教信仰，他拒绝在礼拜天进行比赛。

on

prep. （表示方向）向，（表示对象）对，（表示位置）在…上，（表示时间）在…之时；adv. （放，穿，连接）上，向前，（继续）下去；adj. 活动着的情况，状态，使用着的，发生着的，计划中的；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

principle

n. 原则，原理，准则，道义，道德标准，本能；

例句
Haig went on to elucidate his personal principle of war...
海格继续解释他个人的战争原则。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

understate

vt. 少说，少报，有意识地轻描淡写；vi. 保守地说，有意轻描淡写；

例句
The government chooses deliberately to understate the increase in prices...
政府故意对物价上涨轻描淡写。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

income

n. 收入，进款，进来的动作，进入；

例句
Local taxes are going to be taking a bigger bite out of people's income than they ever have before.
地方税收在人们收入中的比重将超过以往任何时候。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

taxation

n. 课税，征税，税，税收；

例句
Government expenditure is financed by taxation and by borrowing.
政府开支依靠征税款和借贷来维持。

purposes

n. 意志( purpose的名词复数 )，目的，作用，（进行中的）行动；

例句
The curtains are for purely decorative purposes and do not open or close.
那些窗帘纯粹是作装饰用的，不能拉开或合上。