I should like to enlarge a bit on this point.
关于这一点我还想多说几句。
Please enlarge on this question, we need to know more.
请再详细谈谈这个问题,我们需要多了解一些。
He enlarged on the importance of studying English.
他详细地讲了学习英语的重要性。
She enlarged on her favourite subject.
她滔滔不绝地谈着她得意的问题。