redouble
英 [riː'dʌb(ə)l]
美[,ri'dʌbl]
	    - vt. 再加倍;把…再折叠;循著…折回
 - vi. 加倍;回响;急速折回
 - n. 再加倍
 
英英释意
- 1. double in magnitude, extent, or intensity;
 - "The enemy redoubled their screaming on the radio"
 
- 2. double again;
 - "The noise doubled and redoubled"
 
- 3. make twice as great or intense;
 - "The screaming redoubled"