redouble

1. V-T/V-I If you redouble your efforts, you try much harder to achieve something. If something redoubles, it increases in volume or intensity. 大大加强; 大量增加

The campaign has redoubled its efforts to win the backing of women. 该活动已经加大努力，以赢取女性选民支持。

The applause redoubled. 喝彩声越发震耳。