下面句子中的on the subject怎么解释?“得到的描述到底充不充足?”
Not all that Mrs.Bennet,howere,with the assistant of her five daughters,could ask on the subject was sufficient to draw from her hasband any satisfactory description of Mr.Bingley.
on the subject 后面的was sufficient 与句子是什么关系，是修饰什么的？