redoubling

We redouble our efforts for Manhan’s release.

为解救马汉,我们做最大的努力。

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

那个游泳者看见前面有, 大大加快他的速度。

The fox redoubled on its trail to escape the hunters.

那狐狸循路折回逃避猎人。

He planned with redoubled care.

他非常认真做划。