an older brother or someone who behaves protectively
старший брат или кто-то, кто ведет себя защитно (starshiy brat ili kto-to, kto vedet sebya zashchitno)
"Mark acts like a big brother to everyone in the neighborhood."
"Марк ведет себя как старший брат для всех в районе." (Mark vedet sebya kak **starshiy brat** dlya vsekh v rayone.)
to leave for a particular place
to make someone feel happier
to have a personal reason to complain or criticize
to start dancing, especially at a party
to create innovations that shape future technology
an approximate estimate or number