His informants were middle-class professional women.是什么意思？

His informants were middle-class professional women.

他的合作者是中产阶级职业妇女。

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。

informants

n. （向警方或报纸）提供消息的人( informant的名词复数 )，告密者，（为研究等）提供资料的人，合作者；

例句
His informants were middle-class professional women.
他的合作者是中产阶级职业妇女。

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。

professional

adj. 专业的，专业性的，职业的；n. 专业人士；

例句
The whole cast executed the production with truly professional aplomb.
全体演职人员以一种真正的专业精神，从容不迫地开始了影片的制作。

women

n. 女人(woman的复数)，堂客，红粉；

例句
One in eight women lives in an abusive relationship.
每八位女性中就有一位遭受伴侣的虐待。