a significant or sudden development or discovery; an important achievement
значительное или неожиданное развитие или открытие; важное достижение (znachitel'noe ili neozhidannoe razvitie ili otkrytie; vazhnoe dostizhenie)
"The scientist made a major breakthrough in his research on cancer treatment."
"Учёный сделал большой breykfru в своих исследованиях лечения рака." (Uchyonij sdelal bol'shoy **breakthrough** v svoikh issledovaniyakh lecheniya raka.)
to create a positive image of yourself in someone's mind
to set a limit on what is acceptable
to have a good and peaceful sleep
to make a bad situation or feeling less intense or unpleasan...
to speak highly of someone
a strategy or plan of action
