to stay until the end of something that is long or boring
оставаться до конца чего-то длинного или скучного (ostavat'sya do kontsa chego-to dlinogo ili skuchnogo)
"We had to sit through a three-hour seminar on research methods."
"Нам пришлось сидеть до конца трехчасового семинара по методам исследования." (nam prishlos' sidet' do kontsa trekhchasovogo seminara po metodam issledovaniya)
to gradually stop using or producing something
to decide not to do something after agreeing to it
to prevent the market from collapsing or declining
to choose one thing instead of another
to calm down after being angry or excited
to include extra information or people to a conversation