a criminal case that has not been solved for a long time
криминальное дело, которое не было раскрыто долгое время (kriminal'noe delo, kotoroe ne bylo raskryto dolgoe vremya)
"The detective reopened a cold case from 1999."
"Детектив вновь открыл колд кейс 1999 года." (Detektiv vnov' otkryl cold case 1999 goda)
to start being broadcast on television or radio
to do one's fair share of work or duty
to feel very nervous about something
to learn by making mistakes or through difficult experiences
to make difficult decisions in challenging situations
to remain calm and confident under pressure