Don’t waste time worrying about things that have already happened.
Не трать время на переживания по поводу того, что уже произошло. (Ne trat' vremya na perezhivaniya po povodu togo, chto uzhe proizošlo.)
"Don't cry over spilled milk; learn from your mistake."
"Не плачь над пролитым молоком; учись на своих ошибках." (Ne plach' nad prolitym molokom; uchis' na svoikh oshibkakh.)
when something begins to decline in quality or popularity
so stressed or tired that one can hardly cope
to refuse to change one's position or opinion
to show the necessary ability when faced with a challenge
a password that is difficult for others to guess, typically...
to tell an obvious and bold lie
