The importance of the plan needs no further elaboration.
这个计划的重要性无须赘述。
《牛津词典》
After the homework has been discussed, the teacher explains the topic of the lesson, slowly and with a lot of repetition and elaboration.
"讨论完作业之后,教师会缓慢地、反复精细地讲解这节课的主题。
The development of an understanding of the self becomes evident between the first and second years of life and shows rapid elaboration in subsequent years.