vaulting
noun [ U ] uk/ˈvɒl.tɪŋ/ us/ˈvɑːl.t̬ɪŋ/
（支撑屋顶或房间的）穹顶结构
arches that support a ceiling or room
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。
vaulting
adjective uk/ˈvɒl.tɪŋ/ us/ˈvɑːl.t̬ɪŋ/
vaulting ambition disapproving野心;奢望
a strong wish to be extremely successful, powerful, rich, etc. and a belief that this is more important than anything else
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。