You cannot flay the same ox twice.

一头牛不能剥两次皮。

He was so angry he nearly flayed his horse alive.

他气得几乎把马活活抽死。

The teacher flayed the idle students.

老师严责那些懒惰学。

There he was condemned to death by the king, and before being beheaded he was flayed alive.

他被那里国王定为死罪，在被砍头之前，活活地剥了皮。