Offices became increasingly feminized during the 1960s.是什么意思？

Offices became increasingly feminized during the 1960s.

20世纪60年代期间办公室的女职员越来越多。

offices

n. 办公室( office的名词复数 )，公职，（政府部门的）部，有特定用途的房间[建筑物]；

例句
We closed our offices at 2:00 p.m. to give employees time to absorb the bad news.
我们下午两点就放工了，以便给员工时间来慢慢接受这一坏消息。

became

v. 变为，成为（ become的过去式 ）；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

increasingly

adv. 越来越多地，日益，格外，越来越…，愈；

例句
Theirs had been an increasingly attenuated relationship.
他们的关系日益冷淡。

feminized

v. 使女性化，女性化( feminize的过去式和过去分词 )；

例句
Offices became increasingly feminized during the 1960s.
20世纪60年代期间办公室的女职员越来越多。

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

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。