The campaign had begun during his absence.是什么意思？

The campaign had begun during his absence.

在他不在期间运动已经开始了。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

campaign

n. 运动，竞选运动，战役，季节性竞赛；vi. 参加[发起]运动，参加竞选，参战，参加战役，作战；

例句
The election campaign has been fought not in street rallies but on the airwaves...
此次竞选大战不是以街头集会的方式进行，而是通过电视和广播一决胜负。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

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

begun

n. [人名] 贝根，[地名] [印度] 贝贡；v. 开始（begin的过去分词）；

例句
The women who worked in these mills had begun to agitate for better conditions.
在这些工厂里做工的妇女们开始抗议要求改善工作条件。

during

prep. 在…的时候，在…期间，当…之时，其间；

例句
...the accrual of funds used during construction.
建设过程中资金的累积

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。

absence

n. 缺席，缺勤，缺乏，缺少，无，心不在焉，不注意；

例句
The presence or absence of clouds can have an important impact on heat transfer...
有无云层对热量的传递会产生重要的影响。