a significant or groundbreaking achievement
значительное или новаторское достижение (znachitel'noe ili novatorskoe dostizhenie)
"The first man landing on the moon was truly a giant leap for mankind."
"Первый человек, приземлившийся на Луну, действительно стал огромным шагом для человечества." (Pervyj chelovek, prizemlivshijsya na Lunu, deystvitel'no stal **ogromnym shagom dlya chelovechestva**.)
new people who bring fresh ideas
to say bad things about someone when they are not present
To do something with full effort and enthusiasm.
to say something without thinking carefully or checking
an approximate estimate or number
To exert effort or work hard at something.
