The professor started to expatiate as soon as he entered the classroom.

这位教授一走进教室就开始了长篇大论。

I will not expatiate on the details of this project.

关于这个项目的细节我就不再赘述了。

When all people are present, the leader will start to expatiate.

等人到齐后，领导就会进行详述。

Below expatiate from the three aspects above.

本文从以上三方面分别进行了阐述。

Expatiate and analyze the result of evaluation.

阐述和分析评价结果。

Expatiate on the meaning of developing innovative ability.

阐述了培养创新能力的重要意义。

This article expatiate on the application of physics in medicine.

本文阐述了物理学在现代四大医学影像中的应用。

At the end of the paper, we expatiate the kernel part of the hardware.

最后，对硬件实现的核心部分作了详尽的阐述。