redouble

We redouble our efforts for Manhan’s release.

为了解救马汉,做了最大努力。

we will redouble our efforts to reform agricultural policy.

加倍努力，改革农业政策。

The fox redoubled on its trail to escape the hunters.

那狐狸循原路折回逃避猎人。

He planned with redoubled care.

他非常认真地做出了计划。

When he saw the land ahead, the swimmer redoubled his speed.

那个游泳者看见前面有陆地时, 大大地加快了他速度。