运动员轻松地跳过横杆，展示了完美的跳跃技巧。

The athlete demonstrated perfect ___vaulting technique by clearing the bar with ease.

这座古桥的拱顶结构展现了精湛的建筑工艺。

The ancient bridge showcases exquisite craftsmanship in its stone ___vaulting.

他那不切实际的野心最终导致了项目的失败。

His ___vaulting ambition ultimately led to the failure of the project.