сложнейшие

Said in one Russian podcast line.

• даны ответы на какие-то сложнейшие вопросы,

  answers are given to some of the most complex questions,

  

  От звонка до звонкаРазговор с Ольгой Громовой

The shows belong to their publishers, and each line plays from the publisher’s own file. Translations are machine-made. Russian books and courses on Amazon (affiliate link).