5 sentences

1. 面对困难，我们要敢于斗争。

   miàn​duì kùn​nan, wǒ​men yào gǎn​yú dòu​zhēng.

   When facing difficulties, we must dare to fight.

   Source: Dong Chinese Dictionary

2. 他是一位敢于公开身份的同志。

   tā shì yī wèi gǎn​yú gōng​kāi shēn​fèn de tóng​zhì.

   He is a gay man who is brave enough to be open about his identity.

   Source: Dong Chinese Dictionary

3. 我们不能墨守常规，要敢于创新。

   wǒ​men bù néng mò​shǒu cháng​guī, yào gǎn​yú chuàng​xīn.

   We cannot just stick to convention; we must dare to innovate.

   Source: Dong Chinese Dictionary

4. 他性格耿直，在会议上敢于对错误的方案直言相证。

   tā xìng​gé gěng​zhí, zài huì​yì shàng gǎn​yú duì cuò​wù de fāng'àn zhí​yán xiāng zhèng.

   He has a straightforward personality and is brave enough to directly speak out against flawed proposals during meetings.

   Source: Dong Chinese Dictionary

5. 企业要敢于进行自我革命，才能在激烈的竞争中生存。

   qǐ​yè yào gǎn​yú jìn​xíng zì​wǒ gé​mìng, cái néng zài jī​liè de jìng​zhēng zhōng shēng​cún.

   Enterprises must dare to reinvent themselves to survive in fierce competition.

   Source: Dong Chinese Dictionary