vaulting/ˈvɑːl.t̬ɪŋ/形容词野心;奢望He sacrificed his marriage to his vaulting political ambition.他牺牲了婚姻来实现自己的政治野心。/ˈvɑːl.t̬ɪŋ/名词(支撑屋顶或房间的)穹顶结构After the explosion, nothing of the walls or vaulting remained intact.爆炸发生之后,没什么墙壁或拱顶是完好无损的。想跟读,去练习