In a slip of the tongue the schemer exposed his true motivation.

阴谋者一时口误了的动机。

He exposed himself to the enemy's gunfire.

他把人炮火之下。

The parvenu was much too foxy to let slip even a hint of his working-class background.

发户十分狡猾，他决不是工人出身这一事实。

He who excuses himself exposes himself.

越为辩解的人越的错误。

He never revealed his identity.

他从未过的身份。