sell (someone) on (something)

Translations
убедить (кого-то) в (чем-то)
She sold him on the idea of starting a new business.
Она убедила его в идее начать новый бизнес.
Definitions
To persuade someone to support or agree with a particular idea, plan, or product.
Words
sell

verb
убедить
someone

pronoun
кого-то
on

preposition
в
something

pronoun
чем-то