他详细阐述了自己的观点。

Tā xiángxì chǎnshù le zìjǐ de guāndiǎn.

He elaborated on his own viewpoint in detail.

在报告中，她阐述了新政策。

Zài bàogào zhōng, tā chǎnshù le xīn zhèngcè.

In the report, she explained the new policy.

他用简单的语言阐述了理论。

Tā yòng jiǎndān de yǔyán chǎnshù le lǐlùn.

He explained the theory in simple language.