2 sentences for 加倍 (jiā​bèi — redouble)

1. 我明天会加倍努力的。

   wǒ míng​tiān huì jiā​bèi nǔ​lì de.

   I'll work twice as hard tomorrow.

   Source: OpenSubtitles

2. 面对挑战，我们需要加倍努力才能成功。

   miàn​duì tiǎo​zhàn, wǒ​men xū​yào jiā​bèi nǔ​lì cái néng chéng​gōng.

   Faced with challenges, we need to double our efforts to succeed.

   Source: Dong Chinese Dictionary