2 sentences for 主持 (zhǔ​chí — uphold)

1. 我们要坚持原则，主持公道。

   wǒ​men yào jiān​chí yuán​zé, zhǔ​chí gōng​dào.

   We must stick to our principles and uphold justice.

   Source: Dong Chinese Dictionary

2. 这种时候，需要有人出头来主持公道。

   zhè zhǒng shí​hou, xū​yào yǒu rén chū​tóu lái zhǔ​chí gōng​dao.

   At a time like this, someone needs to step forward to see justice done.

   Source: Dong Chinese Dictionary