To start a new activity previously neglected by others; do pioneering work.
Начать новый вид деятельности, на который ранее никто не обрашал внимание; быть первооткрывателем.
Albert Einstein broke new ground with his theory of relativity.
To begin something never done before.
Scientists have broken fresh ground in their exploration of outer space.
Ученые открыли новые горизонты в исследовании открытого космоса.
The school broke new ground with reading lessons that taught students to guess the meaning of new words.