at great length造句

He expounded his views on the subject to me at great length.
他详细地向我阐述了他在这个问题上的观点。

She rambled on at great length but she didn't get to the heart of the matter.
她夹七夹八地说了许多话也没说到点子上.

The scholar discoursed at great length on the poetic style of John Keats.
那位学者详细讲述了约翰·济慈的诗歌风格.