to do someone’s job temporarily
временно выполнять чью-то работу (vremenno vypolnyat' ch'yu-to rabotu)
"I had to fill in for my colleague while he was on leave."
"Мне пришлось заменить моего коллегу, пока он был в отпуске." (Mne prishlos' **fill in for** moyego kollegu, poka on byl v otpuske.)
to collaborate or work together for a cause
to acknowledge someone’s contribution
to spread gradually from the wealthy to the less wealthy; to...
to calm down or relax when feeling tense or angry
to reveal something that was hidden or unclear
to confirm information or ask for approval from someone