Russian pronunciation lookup
оборонительных
Said in one Russian podcast line.
Но ее там и не надо было готовить в плане оборонительных рубежей.
But it wasn't necessary to prepare it in terms of defensive lines there.

ГеостратегияКурск, Прибалтика, Польша и далее везде | Андрей Школьников и Владимир Трухан
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).