跟头

The plane looped the loop then disappeared into the distance.

飞机跟头，然后消失在远方。

He did a brilliant backward somersault.

他漂亮的后跟头。

Bankrupt and repudiation are the spring-broads from  which much of our civilization vaults and turns its somersets,but the savage stands on the unelastic plank of famine.

20破产和拒付债务都是跳板，我们文中的大部分就从里纵跃升，起跟头的，而困顿的人却站在饥饿这条没有弹性的跳板。