state (someone's) case

Translations
изложить (чьё-то) дело
The lawyer asked the witness to state her case clearly.
Адвокат попросил свидетеля чётко изложить её дело.
Definitions
To present or explain the reasons, arguments, or evidence in support of someone's position or situation, often in a formal context such as a legal proceeding or a debate.
Words
case

noun
случай
state

verb
заявлять