mid-15c., "double again, multiply" (trans.), from Middle French redoubler, from Old French re- "again" (see re-) + doubler "to double" (see double (v.)). Meaning "become twice as much" (intrans.) is from late 15c. Related: Redoubled; redoubling.
实用例句
1. There isn't much time ahead , so we should redouble our effort.
来日无多, 须加倍努力.
来自《现代汉英综合大词典》
2. We redouble our efforts for Manhan's release.
为了解救马汉,我们做了最大的努力.
来自《简明英汉词典》
3. Redouble your efforts and not slacken off.
要再接再励,不能松劲.
来自《现代汉英综合大词典》
4. The president also called on nations to redouble their efforts to negotiate an international trade agreement.
总统还呼吁各国就签订国际贸易协定加倍努力进行磋商。
来自柯林斯例句
5. We will have to redouble our loving care of the saplings that have just been planted.
