Her expenses were allowable deductions.是什么意思？

Her expenses were allowable deductions.

她的费用开支是免税的。

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。

Expenses

n. 费用，花钱的东西，开销，（向雇主报销的）费用，费用( expense的名词复数 )，花费的钱，消耗，花钱的东西；

例句
Her expenses were allowable deductions.
她的费用开支是免税的。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

allowable

adj. 允许的，正当的，可承认的，许用；

例句
Capital punishment is allowable only under exceptional circumstances.
只有特殊情况才允许执行死刑。

deductions

n. 扣除( deduction的名词复数 )，结论，扣除的量，推演；

例句
My mother had consequently made her own shrewd deductions about what was going on in my marriage.
我母亲已据此对我的婚姻状况作出了她自己精明的推断。