柯林斯詞典blast off (blasting,blasted,blasts) 1. PHRASAL VERB When a space rocket blasts off, it leaves the ground at the start of its journey. (火箭等) 發(fā)射升空 Columbia is set to blast off at 1:20 a.m. Eastern Time tomorrow. 哥倫比亞號定于東部時間明晨1:20點(diǎn)火起飛。 返回 blast-off