跟头

The plane looped the loop then disappeared into the distance.

飞机翻了个跟头，然后消失在远方。

He did a brilliant backward somersault.

他翻了个漂亮后翻跟头。

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破产和拒付债跳板，我们文明中大部分就从里纵跃上升，翻起跟头，而困顿站在饥饿这条没有弹性跳板上。