blast off片语动词KK [blæst ɔf] /blæst ɔf/发音片语动词1发射升空、点火升空The rocket blasted off from the launch pad at dawn.火箭在黎明时分从发射台升空。2飞快离开、一溜烟走掉口语He blasted off on his motorcycle before I could say goodbye.我还没来得及道别,他就骑著机车一溜烟走了。名词1发射、升空Thousands of spectators gathered to watch the blastoff.数千名观众聚集观看火箭发射。用这个字练口说→