Lesson 5 推出开车拓展2-4[音频]P: Nevek Ground, Ibisair 12, request start and pushbackC: Ibisair 12, traffic is a 737, _________ you is for _______ , once __________, cleared to start and pushback at own discretion, caution, ________, ________ to the apron, south of taxiway F.Pb: after the 737, cleared to start and pushback, Ibisair 12.