He offered to pay £100 a month towards his son's upkeep.是什么意思？

He offered to pay £100 a month towards his son's upkeep.

他愿意每月付100英镑作为儿子的抚养费。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

offered

v. 出（价）( offer的过去式和过去分词 )，提出，演出，做出；

例句
His mother offered her apologies to the Jones family...
他的母亲向琼斯一家赔了不是。

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。

pay

vt.& vi. 付款，偿还，补偿，（对…）有利；vt. 给予，支付；n. 工资，薪水，报答；adj. 收费的，需付费的；

例句
Single people are treated as an aberration and made to pay a supplement.
独身者被当成异类，而且要付一笔额外的费用。

month

n. 月，月份，一个月的时间；

例句
The court ordered a four month adjournment.
法庭决定休庭4个月。

towards

prep. 朝，向，对于，接近，为了；

例句
...absent fathers who fail to pay towards the costs of looking after their children.
那些不在子女身边、未能支付抚养费的父亲

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

upkeep

n. 保养，维修，维持，保养费，维修费；

例句
The maintenance department is responsible for the general upkeep of the park.
维护部负责公园的一般养护。