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。

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。